SAS Output

Table B2A
Number of Children Served in the 50 States and D.C. (including BIA schools) Under IDEA, Part B, Ages 6-21
By Age Group and Disability, 1991 Through 2005
Age group	Disability	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005
6 to 21	Resident population	57,649,102	58,020,168	58,412,492	59,116,356	60,109,523	61,339,104	62,552,035	63,763,580	64,717,510	65,383,118	65,791,738	65,919,011	65,911,680	65,867,911	65,825,834
6 to 21	All disabilities	4,464,761	4,592,790	4,736,029	4,866,540	5,036,139	5,185,444	5,347,058	5,486,630	5,620,764	5,711,482	5,797,930	5,892,878	5,970,891	6,031,367	6,021,462
6 to 21	Mental retardation	537,602	518,498	536,632	555,440	570,825	579,509	589,093	596,824	600,457	599,738	592,675	580,656	571,121	555,377	533,426
6 to 21	Speech or language impairments	996,915	995,920	1,014,583	1,017,108	1,023,256	1,044,081	1,058,067	1,067,857	1,080,991	1,085,497	1,084,588	1,101,830	1,117,418	1,136,005	1,143,195
6 to 21	Visual impairments	23,487	23,078	24,140	24,130	24,904	25,227	25,481	25,567	25,845	25,470	25,313	25,486	25,311	25,432	25,369
6 to 21	Emotional disturbance	399,220	400,851	413,871	427,096	438,215	445,334	453,547	461,864	468,848	473,393	476,979	481,142	483,613	483,384	471,306
6 to 21	Orthopedic impairments	50,843	52,168	56,212	59,832	62,565	65,755	66,868	68,896	70,872	72,442	73,217	73,508	67,697	64,813	62,618
6 to 21	Other health impairments	58,046	65,531	82,246	106,282	133,307	160,398	189,996	220,643	253,982	292,333	339,354	390,575	449,578	508,435	557,121
6 to 21	Specific learning disabilities	2,235,199	2,354,282	2,411,052	2,493,354	2,583,104	2,653,590	2,730,218	2,788,653	2,837,415	2,847,338	2,842,571	2,839,719	2,822,809	2,789,496	2,727,802
6 to 21	Deaf-blindness	1,322	1,340	1,276	1,260	1,344	1,176	1,286	1,577	1,639	1,287	1,570	1,536	1,599	1,636	1,539
6 to 21	Multiple disabilities	97,116	102,083	108,284	88,210	93,176	98,068	105,877	106,412	111,596	121,632	127,456	129,580	131,545	132,035	132,595
6 to 21	Hearing impairments	59,679	59,795	63,662	64,290	67,171	67,860	68,830	69,905	70,482	69,901	70,290	71,110	71,176	71,685	71,484
6 to 21	Autism	5,094	15,302	18,696	22,331	28,725	34,008	42,137	53,644	65,617	79,085	98,032	118,269	140,398	165,619	192,643
6 to 21	Traumatic brain injury	238	3,942	5,375	7,207	9,547	10,438	11,875	12,934	13,820	14,844	20,717	21,392	22,470	23,204	23,449
6 to 21	Developmental delay	.	.	.	.	.	.	3,783	11,854	19,200	28,522	45,168	58,075	66,156	74,246	78,915
6 to 11	Resident population	21,964,019	22,200,390	22,464,239	22,694,929	23,011,267	23,560,734	24,032,912	24,462,310	24,788,578	24,968,331	24,892,998	24,588,639	24,274,310	23,994,163	23,767,612
6 to 11	All disabilities	2,342,421	2,387,864	2,442,748	2,498,555	2,567,492	2,631,946	2,692,093	2,733,477	2,770,020	2,772,971	2,748,634	2,725,709	2,728,554	2,741,240	2,729,822
6 to 11	Mental retardation	213,357	205,443	215,756	224,731	230,936	234,803	235,985	235,747	234,176	228,207	216,652	202,069	190,658	178,879	168,595
6 to 11	Speech or language impairments	880,825	887,234	898,220	902,544	907,637	924,799	934,497	941,242	950,402	951,415	947,428	953,739	963,869	977,104	981,716
6 to 11	Visual impairments	11,377	11,015	11,455	11,290	11,591	11,589	11,806	11,819	12,227	11,900	11,815	11,629	11,457	11,396	11,448
6 to 11	Emotional disturbance	141,238	136,930	140,158	144,129	146,881	149,916	153,586	157,170	159,580	160,170	156,077	149,737	143,073	137,759	131,254
6 to 11	Orthopedic impairments	27,540	28,945	31,340	33,172	34,206	35,235	35,311	35,671	36,519	36,897	36,608	35,928	32,746	31,344	30,041
6 to 11	Other health impairments	28,958	33,203	43,062	56,356	71,162	84,299	97,185	110,176	124,264	139,629	156,055	172,123	192,498	213,879	229,344
6 to 11	Specific learning disabilities	956,665	993,340	1,003,977	1,035,150	1,065,533	1,085,002	1,103,702	1,107,199	1,100,483	1,071,089	1,018,862	972,965	948,787	927,992	897,833
6 to 11	Deaf-blindness	570	538	531	499	535	476	497	639	810	562	638	642	660	634	592
6 to 11	Multiple disabilities	49,576	51,950	54,439	43,260	45,551	47,806	50,361	48,948	50,611	54,098	55,322	54,219	53,001	51,231	50,450
6 to 11	Hearing impairments	29,342	29,000	30,730	31,041	32,072	32,473	32,817	33,218	33,256	32,859	32,527	32,351	32,077	31,958	31,889
6 to 11	Autism	2,896	8,769	10,981	13,538	17,477	21,469	27,154	34,938	43,292	52,172	63,794	74,446	85,577	96,852	109,869
6 to 11	Traumatic brain injury	77	1,497	2,099	2,845	3,911	4,079	4,506	4,856	5,200	5,451	7,688	7,786	7,995	7,966	7,876
6 to 11	Developmental delay	.	.	.	.	.	.	3,783	11,854	19,200	28,522	45,168	58,075	66,156	74,246	78,915
12 to 17	Resident population	20,421,173	21,028,114	21,568,279	22,223,289	22,714,630	23,100,202	23,502,678	23,731,689	23,969,642	24,233,912	24,444,616	24,879,936	25,148,312	25,352,541	25,490,701
12 to 17	All disabilities	1,893,405	1,972,564	2,056,021	2,133,103	2,219,569	2,299,902	2,389,103	2,475,470	2,570,830	2,662,277	2,769,007	2,875,628	2,939,850	2,980,819	2,979,095
12 to 17	Mental retardation	257,615	250,750	259,467	270,945	278,739	283,940	290,011	295,662	301,065	305,661	309,653	310,987	311,120	306,618	294,964
12 to 17	Speech or language impairments	111,751	104,513	111,982	110,360	111,386	114,871	118,969	121,879	125,532	129,200	132,112	142,982	148,371	153,481	155,961
12 to 17	Visual impairments	10,245	10,392	11,012	11,178	11,591	11,822	11,804	11,783	11,701	11,642	11,527	11,839	11,961	12,160	12,008
12 to 17	Emotional disturbance	236,008	241,935	250,999	260,464	267,374	270,819	274,704	278,536	283,067	287,807	295,470	304,309	312,147	316,105	310,842
12 to 17	Orthopedic impairments	19,356	19,404	21,044	22,824	24,378	26,324	27,321	28,701	29,711	30,765	31,657	32,482	30,014	28,720	27,865
12 to 17	Other health impairments	25,403	28,940	35,554	45,754	57,400	70,782	86,255	102,580	121,030	143,278	172,509	205,200	241,459	276,322	307,239
12 to 17	Specific learning disabilities	1,169,180	1,244,923	1,287,003	1,338,057	1,388,400	1,436,496	1,488,545	1,538,223	1,593,713	1,638,888	1,686,518	1,725,462	1,729,159	1,716,290	1,685,485
12 to 17	Deaf-blindness	538	569	537	571	597	521	590	712	610	511	680	686	732	777	704
12 to 17	Multiple disabilities	35,703	37,911	41,554	33,704	35,855	38,314	41,421	43,641	46,534	52,041	56,104	58,928	61,236	63,081	63,914
12 to 17	Hearing impairments	25,868	26,599	28,615	29,134	30,617	30,872	31,379	31,839	32,399	32,447	33,137	34,071	34,506	35,022	34,928
12 to 17	Autism	1,613	4,789	5,702	6,648	8,685	9,965	12,069	15,326	18,359	22,329	28,668	37,154	46,834	59,289	71,889
12 to 17	Traumatic brain injury	125	1,839	2,552	3,464	4,547	5,176	6,035	6,588	7,109	7,708	10,972	11,528	12,311	12,954	13,296
18 to 21	Resident population	15,263,910	14,791,664	14,379,974	14,198,138	14,383,626	14,678,168	15,016,445	15,569,581	15,959,290	16,180,875	16,454,124	16,450,436	16,489,058	16,521,207	16,567,521
18 to 21	All disabilities	228,935	232,362	237,260	234,882	249,078	253,596	265,860	277,683	279,914	276,234	280,289	291,541	302,487	309,308	312,545
18 to 21	Mental retardation	66,630	62,305	61,409	59,764	61,150	60,766	63,097	65,415	65,216	65,870	66,370	67,600	69,343	69,880	69,867
18 to 21	Speech or language impairments	4,339	4,173	4,381	4,204	4,233	4,411	4,601	4,736	5,057	4,882	5,048	5,109	5,178	5,420	5,518
18 to 21	Visual impairments	1,865	1,671	1,673	1,662	1,722	1,816	1,871	1,965	1,917	1,928	1,971	2,018	1,893	1,876	1,913
18 to 21	Emotional disturbance	21,974	21,986	22,714	22,503	23,960	24,599	25,257	26,158	26,201	25,416	25,432	27,096	28,393	29,520	29,210
18 to 21	Orthopedic impairments	3,947	3,819	3,828	3,836	3,981	4,196	4,236	4,524	4,642	4,780	4,952	5,098	4,937	4,749	4,712
18 to 21	Other health impairments	3,685	3,388	3,630	4,172	4,745	5,317	6,556	7,887	8,688	9,426	10,790	13,252	15,621	18,234	20,538
18 to 21	Specific learning disabilities	109,354	116,019	120,072	120,147	129,171	132,092	137,971	143,231	143,219	137,361	137,191	141,292	144,863	145,214	144,484
18 to 21	Deaf-blindness	214	233	208	190	212	179	199	226	219	214	252	208	207	225	243
18 to 21	Multiple disabilities	11,837	12,222	12,291	11,246	11,770	11,948	13,195	13,823	14,451	15,493	16,030	16,433	17,308	17,723	18,231
18 to 21	Hearing impairments	4,469	4,196	4,317	4,115	4,482	4,515	4,631	4,848	4,827	4,595	4,626	4,688	4,593	4,705	4,667
18 to 21	Autism	585	1,744	2,013	2,145	2,563	2,574	2,914	3,380	3,966	4,584	5,570	6,669	7,987	9,478	10,885
18 to 21	Traumatic brain injury	36	606	724	898	1,089	1,183	1,334	1,490	1,511	1,685	2,057	2,078	2,164	2,284	2,277

Table B2A
Percentage of Children Served in the 50 States and D.C. (including BIA schools) Under IDEA, Part B, Ages 6-21
By Age Group and Disability, 1991 Through 2005
Age group	Disability	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005
6 to 21	All disabilities	100.00	100.00	100.00	100.00	100.00	100.00	100.00	100.00	100.00	100.00	100.00	100.00	100.00	100.00	100.00
6 to 21	Mental retardation	12.04	11.29	11.33	11.41	11.33	11.18	11.02	10.88	10.68	10.50	10.22	9.85	9.57	9.21	8.86
6 to 21	Speech or language impairments	22.33	21.68	21.42	20.90	20.32	20.13	19.79	19.46	19.23	19.01	18.71	18.70	18.71	18.83	18.99
6 to 21	Visual impairments	0.53	0.50	0.51	0.50	0.49	0.49	0.48	0.47	0.46	0.45	0.44	0.43	0.42	0.42	0.42
6 to 21	Emotional disturbance	8.94	8.73	8.74	8.78	8.70	8.59	8.48	8.42	8.34	8.29	8.23	8.16	8.10	8.01	7.83
6 to 21	Orthopedic impairments	1.14	1.14	1.19	1.23	1.24	1.27	1.25	1.26	1.26	1.27	1.26	1.25	1.13	1.07	1.04
6 to 21	Other health impairments	1.30	1.43	1.74	2.18	2.65	3.09	3.55	4.02	4.52	5.12	5.85	6.63	7.53	8.43	9.25
6 to 21	Specific learning disabilities	50.06	51.26	50.91	51.23	51.29	51.17	51.06	50.83	50.48	49.85	49.03	48.19	47.28	46.25	45.30
6 to 21	Deaf-blindness	0.03	0.03	0.03	0.03	0.03	0.02	0.02	0.03	0.03	0.02	0.03	0.03	0.03	0.03	0.03
6 to 21	Multiple disabilities	2.18	2.22	2.29	1.81	1.85	1.89	1.98	1.94	1.99	2.13	2.20	2.20	2.20	2.19	2.20
6 to 21	Hearing impairments	1.34	1.30	1.34	1.32	1.33	1.31	1.29	1.27	1.25	1.22	1.21	1.21	1.19	1.19	1.19
6 to 21	Autism	0.11	0.33	0.39	0.46	0.57	0.66	0.79	0.98	1.17	1.38	1.69	2.01	2.35	2.75	3.20
6 to 21	Traumatic brain injury	0.01	0.09	0.11	0.15	0.19	0.20	0.22	0.24	0.25	0.26	0.36	0.36	0.38	0.38	0.39
6 to 21	Developmental delay	.	.	.	.	.	.	0.07	0.22	0.34	0.50	0.78	0.99	1.11	1.23	1.31
6 to 11	All disabilities	100.00	100.00	100.00	100.00	100.00	100.00	100.00	100.00	100.00	100.00	100.00	100.00	100.00	100.00	100.00
6 to 11	Mental retardation	9.11	8.60	8.83	8.99	8.99	8.92	8.77	8.62	8.45	8.23	7.88	7.41	6.99	6.53	6.18
6 to 11	Speech or language impairments	37.60	37.16	36.77	36.12	35.35	35.14	34.71	34.43	34.31	34.31	34.47	34.99	35.33	35.64	35.96
6 to 11	Visual impairments	0.49	0.46	0.47	0.45	0.45	0.44	0.44	0.43	0.44	0.43	0.43	0.43	0.42	0.42	0.42
6 to 11	Emotional disturbance	6.03	5.73	5.74	5.77	5.72	5.70	5.71	5.75	5.76	5.78	5.68	5.49	5.24	5.03	4.81
6 to 11	Orthopedic impairments	1.18	1.21	1.28	1.33	1.33	1.34	1.31	1.30	1.32	1.33	1.33	1.32	1.20	1.14	1.10
6 to 11	Other health impairments	1.24	1.39	1.76	2.26	2.77	3.20	3.61	4.03	4.49	5.04	5.68	6.31	7.05	7.80	8.40
6 to 11	Specific learning disabilities	40.84	41.60	41.10	41.43	41.50	41.22	41.00	40.51	39.73	38.63	37.07	35.70	34.77	33.85	32.89
6 to 11	Deaf-blindness	0.02	0.02	0.02	0.02	0.02	0.02	0.02	0.02	0.03	0.02	0.02	0.02	0.02	0.02	0.02
6 to 11	Multiple disabilities	2.12	2.18	2.23	1.73	1.77	1.82	1.87	1.79	1.83	1.95	2.01	1.99	1.94	1.87	1.85
6 to 11	Hearing impairments	1.25	1.21	1.26	1.24	1.25	1.23	1.22	1.22	1.20	1.18	1.18	1.19	1.18	1.17	1.17
6 to 11	Autism	0.12	0.37	0.45	0.54	0.68	0.82	1.01	1.28	1.56	1.88	2.32	2.73	3.14	3.53	4.02
6 to 11	Traumatic brain injury	0.00	0.06	0.09	0.11	0.15	0.15	0.17	0.18	0.19	0.20	0.28	0.29	0.29	0.29	0.29
6 to 11	Developmental delay	.	.	.	.	.	.	0.14	0.43	0.69	1.03	1.64	2.13	2.42	2.71	2.89
12 to 17	All disabilities	100.00	100.00	100.00	100.00	100.00	100.00	100.00	100.00	100.00	100.00	100.00	100.00	100.00	100.00	100.00
12 to 17	Mental retardation	13.61	12.71	12.62	12.70	12.56	12.35	12.14	11.94	11.71	11.48	11.18	10.81	10.58	10.29	9.90
12 to 17	Speech or language impairments	5.90	5.30	5.45	5.17	5.02	4.99	4.98	4.92	4.88	4.85	4.77	4.97	5.05	5.15	5.24
12 to 17	Visual impairments	0.54	0.53	0.54	0.52	0.52	0.51	0.49	0.48	0.46	0.44	0.42	0.41	0.41	0.41	0.40
12 to 17	Emotional disturbance	12.46	12.27	12.21	12.21	12.05	11.78	11.50	11.25	11.01	10.81	10.67	10.58	10.62	10.60	10.43
12 to 17	Orthopedic impairments	1.02	0.98	1.02	1.07	1.10	1.14	1.14	1.16	1.16	1.16	1.14	1.13	1.02	0.96	0.94
12 to 17	Other health impairments	1.34	1.47	1.73	2.14	2.59	3.08	3.61	4.14	4.71	5.38	6.23	7.14	8.21	9.27	10.31
12 to 17	Specific learning disabilities	61.75	63.11	62.60	62.73	62.55	62.46	62.31	62.14	61.99	61.56	60.91	60.00	58.82	57.58	56.58
12 to 17	Deaf-blindness	0.03	0.03	0.03	0.03	0.03	0.02	0.02	0.03	0.02	0.02	0.02	0.02	0.02	0.03	0.02
12 to 17	Multiple disabilities	1.89	1.92	2.02	1.58	1.62	1.67	1.73	1.76	1.81	1.95	2.03	2.05	2.08	2.12	2.15
12 to 17	Hearing impairments	1.37	1.35	1.39	1.37	1.38	1.34	1.31	1.29	1.26	1.22	1.20	1.18	1.17	1.17	1.17
12 to 17	Autism	0.09	0.24	0.28	0.31	0.39	0.43	0.51	0.62	0.71	0.84	1.04	1.29	1.59	1.99	2.41
12 to 17	Traumatic brain injury	0.01	0.09	0.12	0.16	0.20	0.23	0.25	0.27	0.28	0.29	0.40	0.40	0.42	0.43	0.45
18 to 21	All disabilities	100.00	100.00	100.00	100.00	100.00	100.00	100.00	100.00	100.00	100.00	100.00	100.00	100.00	100.00	100.00
18 to 21	Mental retardation	29.10	26.81	25.88	25.44	24.55	23.96	23.73	23.56	23.30	23.85	23.68	23.19	22.92	22.59	22.35
18 to 21	Speech or language impairments	1.90	1.80	1.85	1.79	1.70	1.74	1.73	1.71	1.81	1.77	1.80	1.75	1.71	1.75	1.77
18 to 21	Visual impairments	0.81	0.72	0.71	0.71	0.69	0.72	0.70	0.71	0.68	0.70	0.70	0.69	0.63	0.61	0.61
18 to 21	Emotional disturbance	9.60	9.46	9.57	9.58	9.62	9.70	9.50	9.42	9.36	9.20	9.07	9.29	9.39	9.54	9.35
18 to 21	Orthopedic impairments	1.72	1.64	1.61	1.63	1.60	1.65	1.59	1.63	1.66	1.73	1.77	1.75	1.63	1.54	1.51
18 to 21	Other health impairments	1.61	1.46	1.53	1.78	1.91	2.10	2.47	2.84	3.10	3.41	3.85	4.55	5.16	5.90	6.57
18 to 21	Specific learning disabilities	47.77	49.93	50.61	51.15	51.86	52.09	51.90	51.58	51.17	49.73	48.95	48.46	47.89	46.95	46.23
18 to 21	Deaf-blindness	0.09	0.10	0.09	0.08	0.09	0.07	0.07	0.08	0.08	0.08	0.09	0.07	0.07	0.07	0.08
18 to 21	Multiple disabilities	5.17	5.26	5.18	4.79	4.73	4.71	4.96	4.98	5.16	5.61	5.72	5.64	5.72	5.73	5.83
18 to 21	Hearing impairments	1.95	1.81	1.82	1.75	1.80	1.78	1.74	1.75	1.72	1.66	1.65	1.61	1.52	1.52	1.49
18 to 21	Autism	0.26	0.75	0.85	0.91	1.03	1.02	1.10	1.22	1.42	1.66	1.99	2.29	2.64	3.06	3.48
18 to 21	Traumatic brain injury	0.02	0.26	0.31	0.38	0.44	0.47	0.50	0.54	0.54	0.61	0.73	0.71	0.72	0.74	0.73

Table B2A
Prevalence Rate of Children Served in the 50 States and D.C. (including BIA schools) Under IDEA, Part B, Ages 6-21
By Age Group and Disability, 1991 Through 2005
Age group	Disability	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005
6 to 21	All disabilities	7.74	7.92	8.11	8.23	8.38	8.45	8.55	8.60	8.69	8.74	8.81	8.94	9.06	9.16	9.15
6 to 21	Mental retardation	0.93	0.89	0.92	0.94	0.95	0.94	0.94	0.94	0.93	0.92	0.90	0.88	0.87	0.84	0.81
6 to 21	Speech or language impairments	1.73	1.72	1.74	1.72	1.70	1.70	1.69	1.67	1.67	1.66	1.65	1.67	1.70	1.72	1.74
6 to 21	Visual impairments	0.04	0.04	0.04	0.04	0.04	0.04	0.04	0.04	0.04	0.04	0.04	0.04	0.04	0.04	0.04
6 to 21	Emotional disturbance	0.69	0.69	0.71	0.72	0.73	0.73	0.73	0.72	0.72	0.72	0.72	0.73	0.73	0.73	0.72
6 to 21	Orthopedic impairments	0.09	0.09	0.10	0.10	0.10	0.11	0.11	0.11	0.11	0.11	0.11	0.11	0.10	0.10	0.10
6 to 21	Other health impairments	0.10	0.11	0.14	0.18	0.22	0.26	0.30	0.35	0.39	0.45	0.52	0.59	0.68	0.77	0.85
6 to 21	Specific learning disabilities	3.88	4.06	4.13	4.22	4.30	4.33	4.36	4.37	4.38	4.35	4.32	4.31	4.28	4.23	4.14
6 to 21	Deaf-blindness	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
6 to 21	Multiple disabilities	0.17	0.18	0.19	0.15	0.16	0.16	0.17	0.17	0.17	0.19	0.19	0.20	0.20	0.20	0.20
6 to 21	Hearing impairments	0.10	0.10	0.11	0.11	0.11	0.11	0.11	0.11	0.11	0.11	0.11	0.11	0.11	0.11	0.11
6 to 21	Autism	0.01	0.03	0.03	0.04	0.05	0.06	0.07	0.08	0.10	0.12	0.15	0.18	0.21	0.25	0.29
6 to 21	Traumatic brain injury	0.00	0.01	0.01	0.01	0.02	0.02	0.02	0.02	0.02	0.02	0.03	0.03	0.03	0.04	0.04
6 to 21	Developmental delay	.	.	.	.	.	.	0.01	0.02	0.03	0.04	0.07	0.09	0.10	0.11	0.12
6 to 11	All disabilities	10.66	10.76	10.87	11.01	11.16	11.17	11.20	11.17	11.17	11.11	11.04	11.09	11.24	11.42	11.49
6 to 11	Mental retardation	0.97	0.93	0.96	0.99	1.00	1.00	0.98	0.96	0.94	0.91	0.87	0.82	0.79	0.75	0.71
6 to 11	Speech or language impairments	4.01	4.00	4.00	3.98	3.94	3.93	3.89	3.85	3.83	3.81	3.81	3.88	3.97	4.07	4.13
6 to 11	Visual impairments	0.05	0.05	0.05	0.05	0.05	0.05	0.05	0.05	0.05	0.05	0.05	0.05	0.05	0.05	0.05
6 to 11	Emotional disturbance	0.64	0.62	0.62	0.64	0.64	0.64	0.64	0.64	0.64	0.64	0.63	0.61	0.59	0.57	0.55
6 to 11	Orthopedic impairments	0.13	0.13	0.14	0.15	0.15	0.15	0.15	0.15	0.15	0.15	0.15	0.15	0.13	0.13	0.13
6 to 11	Other health impairments	0.13	0.15	0.19	0.25	0.31	0.36	0.40	0.45	0.50	0.56	0.63	0.70	0.79	0.89	0.96
6 to 11	Specific learning disabilities	4.36	4.47	4.47	4.56	4.63	4.61	4.59	4.53	4.44	4.29	4.09	3.96	3.91	3.87	3.78
6 to 11	Deaf-blindness	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
6 to 11	Multiple disabilities	0.23	0.23	0.24	0.19	0.20	0.20	0.21	0.20	0.20	0.22	0.22	0.22	0.22	0.21	0.21
6 to 11	Hearing impairments	0.13	0.13	0.14	0.14	0.14	0.14	0.14	0.14	0.13	0.13	0.13	0.13	0.13	0.13	0.13
6 to 11	Autism	0.01	0.04	0.05	0.06	0.08	0.09	0.11	0.14	0.17	0.21	0.26	0.30	0.35	0.40	0.46
6 to 11	Traumatic brain injury	0.00	0.01	0.01	0.01	0.02	0.02	0.02	0.02	0.02	0.02	0.03	0.03	0.03	0.03	0.03
6 to 11	Developmental delay	.	.	.	.	.	.	0.02	0.05	0.08	0.11	0.18	0.24	0.27	0.31	0.33
12 to 17	All disabilities	9.27	9.38	9.53	9.60	9.77	9.96	10.17	10.43	10.73	10.99	11.33	11.56	11.69	11.76	11.69
12 to 17	Mental retardation	1.26	1.19	1.20	1.22	1.23	1.23	1.23	1.25	1.26	1.26	1.27	1.25	1.24	1.21	1.16
12 to 17	Speech or language impairments	0.55	0.50	0.52	0.50	0.49	0.50	0.51	0.51	0.52	0.53	0.54	0.57	0.59	0.61	0.61
12 to 17	Visual impairments	0.05	0.05	0.05	0.05	0.05	0.05	0.05	0.05	0.05	0.05	0.05	0.05	0.05	0.05	0.05
12 to 17	Emotional disturbance	1.16	1.15	1.16	1.17	1.18	1.17	1.17	1.17	1.18	1.19	1.21	1.22	1.24	1.25	1.22
12 to 17	Orthopedic impairments	0.09	0.09	0.10	0.10	0.11	0.11	0.12	0.12	0.12	0.13	0.13	0.13	0.12	0.11	0.11
12 to 17	Other health impairments	0.12	0.14	0.16	0.21	0.25	0.31	0.37	0.43	0.50	0.59	0.71	0.82	0.96	1.09	1.21
12 to 17	Specific learning disabilities	5.73	5.92	5.97	6.02	6.11	6.22	6.33	6.48	6.65	6.76	6.90	6.94	6.88	6.77	6.61
12 to 17	Deaf-blindness	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
12 to 17	Multiple disabilities	0.17	0.18	0.19	0.15	0.16	0.17	0.18	0.18	0.19	0.21	0.23	0.24	0.24	0.25	0.25
12 to 17	Hearing impairments	0.13	0.13	0.13	0.13	0.13	0.13	0.13	0.13	0.14	0.13	0.14	0.14	0.14	0.14	0.14
12 to 17	Autism	0.01	0.02	0.03	0.03	0.04	0.04	0.05	0.06	0.08	0.09	0.12	0.15	0.19	0.23	0.28
12 to 17	Traumatic brain injury	0.00	0.01	0.01	0.02	0.02	0.02	0.03	0.03	0.03	0.03	0.04	0.05	0.05	0.05	0.05
18 to 21	All disabilities	1.50	1.57	1.65	1.65	1.73	1.73	1.77	1.78	1.75	1.71	1.70	1.77	1.83	1.87	1.89
18 to 21	Mental retardation	0.44	0.42	0.43	0.42	0.43	0.41	0.42	0.42	0.41	0.41	0.40	0.41	0.42	0.42	0.42
18 to 21	Speech or language impairments	0.03	0.03	0.03	0.03	0.03	0.03	0.03	0.03	0.03	0.03	0.03	0.03	0.03	0.03	0.03
18 to 21	Visual impairments	0.01	0.01	0.01	0.01	0.01	0.01	0.01	0.01	0.01	0.01	0.01	0.01	0.01	0.01	0.01
18 to 21	Emotional disturbance	0.14	0.15	0.16	0.16	0.17	0.17	0.17	0.17	0.16	0.16	0.15	0.16	0.17	0.18	0.18
18 to 21	Orthopedic impairments	0.03	0.03	0.03	0.03	0.03	0.03	0.03	0.03	0.03	0.03	0.03	0.03	0.03	0.03	0.03
18 to 21	Other health impairments	0.02	0.02	0.03	0.03	0.03	0.04	0.04	0.05	0.05	0.06	0.07	0.08	0.09	0.11	0.12
18 to 21	Specific learning disabilities	0.72	0.78	0.83	0.85	0.90	0.90	0.92	0.92	0.90	0.85	0.83	0.86	0.88	0.88	0.87
18 to 21	Deaf-blindness	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
18 to 21	Multiple disabilities	0.08	0.08	0.09	0.08	0.08	0.08	0.09	0.09	0.09	0.10	0.10	0.10	0.10	0.11	0.11
18 to 21	Hearing impairments	0.03	0.03	0.03	0.03	0.03	0.03	0.03	0.03	0.03	0.03	0.03	0.03	0.03	0.03	0.03
18 to 21	Autism	0.00	0.01	0.01	0.02	0.02	0.02	0.02	0.02	0.02	0.03	0.03	0.04	0.05	0.06	0.07
18 to 21	Traumatic brain injury	0.00	0.00	0.01	0.01	0.01	0.01	0.01	0.01	0.01	0.01	0.01	0.01	0.01	0.01	0.01