Table 23. -- Population in the Social Security Area as of January 1 and Selected Ratios by Year and Alternative
Alter- native and year	Population (in thousands)										Dis- unity ratio
	Marital status				Total	Age			Dependency ratio
	Single	Married	Widowed	Divorced		0-19	20-64	65 +	Aged	Total
1940	66,162	64,943	8,546	1,636	141,287	48,389	83,212	9,686	.116	.698	.022
1950	66,862	78,926	9,790	2,213	157,791	53,236	92,008	12,547	.136	.715	.025
1960	85,286	89,500	10,959	2,974	188,719	72,158	99,493	17,068	.172	.897	.030
1965	92,887	94,781	11,497	3,694	202,859	79,589	104,355	18,915	.181	.944	.035
1970	96,478	100,248	12,403	4,481	213,610	80,553	112,367	20,690	.184	.901	.040
1975	97,343	106,286	13,051	6,939	223,619	78,849	121,790	22,980	.189	.836	.058
1980	100,299	109,480	13,754	10,442	233,975	74,806	133,299	25,870	.194	.755	.085
1985	105,242	112,311	14,749	13,626	245,928	73,149	144,036	28,742	.200	.707	.107
1990	110,553	116,762	15,452	15,915	258,681	74,906	152,056	31,719	.209	.701	.120
1991	111,111	118,306	15,688	16,172	261,277	75,316	153,734	32,227	.210	.700	.121
1992	111,738	119,837	15,925	16,428	263,928	75,998	155,203	32,728	.211	.701	.121
1993	112,421	121,400	16,142	16,658	266,620	76,889	156,483	33,247	.212	.704	.121
1994	113,074	122,873	16,344	16,909	269,200	77,829	157,723	33,648	.213	.707	.121
1995	113,684	124,288	16,538	17,149	271,659	78,688	158,949	34,022	.214	.709	.122
1996	114,789	124,839	16,524	17,945	274,096	79,414	160,293	34,389	.215	.710	.127
Low Cost alternative:
1997	116,053	125,626	16,516	18,672	276,868	80,172	162,023	34,674	.214	.709	.131
1998	117,319	126,392	16,516	19,365	279,592	80,828	163,895	34,869	.213	.706	.136
1999	118,588	127,148	16,522	20,026	282,284	81,411	165,859	35,014	.211	.702	.139
2000	119,859	127,900	16,530	20,661	284,949	81,848	167,914	35,188	.210	.697	.143
2001	121,129	128,645	16,541	21,278	287,592	82,199	170,011	35,382	.208	.692	.147
2002	122,399	129,379	16,553	21,887	290,217	82,516	172,161	35,540	.206	.686	.150
2003	123,671	130,101	16,566	22,490	292,828	82,801	174,297	35,730	.205	.680	.153
2004	124,951	130,822	16,580	23,079	295,431	83,143	176,323	35,966	.204	.676	.157
2005	126,242	131,539	16,595	23,656	298,032	83,489	178,334	36,209	.203	.671	.160
2010	133,084	135,029	16,733	26,401	311,247	85,101	187,518	38,628	.206	.660	.174
2015	140,762	138,179	17,101	28,964	325,005	87,033	194,279	43,693	.225	.673	.187
2020	149,408	140,328	17,818	31,337	338,890	90,933	197,628	50,329	.255	.715	.198
2025	158,587	141,503	18,860	33,320	352,271	95,158	199,080	58,032	.292	.769	.208
2030	167,174	142,777	20,016	34,610	364,576	98,784	201,206	64,587	.321	.812	.213
2035	175,266	144,269	20,977	35,477	375,989	101,777	206,614	67,597	.327	.820	.215
2040	183,083	146,246	21,510	36,105	386,942	104,748	213,758	68,436	.320	.810	.215
2045	190,760	148,895	21,570	36,655	397,880	108,078	221,335	68,467	.309	.798	.215
2050	198,323	152,210	21,333	37,251	409,117	111,862	227,523	69,732	.306	.798	.215
2055	205,764	156,118	21,072	37,967	420,921	115,681	233,452	71,788	.308	.803	.214
2060	213,057	160,517	21,030	38,822	433,427	119,285	239,457	74,684	.312	.810	.214
2065	220,218	165,291	21,281	39,802	446,591	122,763	247,229	76,599	.310	.806	.213
2070	227,287	170,323	21,728	40,879	460,217	126,349	255,447	78,421	.307	.802	.213
2075	234,317	175,540	22,230	42,032	474,118	130,134	263,418	80,566	.306	.800	.213
2080	241,357	180,921	22,724	43,255	488,257	134,038	270,892	83,327	.308	.802	.212
Intermediate alternative:
1997	115,842	125,576	16,530	18,641	276,589	80,066	161,842	34,681	.214	.709	.131
1998	116,849	126,333	16,542	19,288	279,013	80,595	163,524	34,894	.213	.706	.135
1999	117,814	127,139	16,558	19,881	281,393	81,029	165,295	35,069	.212	.702	.138
2000	118,737	127,992	16,576	20,427	283,732	81,296	167,155	35,281	.211	.697	.141
2001	119,615	128,884	16,596	20,941	286,035	81,453	169,057	35,525	.210	.692	.144
2002	120,450	129,812	16,614	21,431	288,308	81,553	171,014	35,741	.209	.686	.146
2003	121,246	130,772	16,632	21,903	290,553	81,597	172,960	35,997	.208	.680	.149
2004	122,006	131,769	16,649	22,352	292,777	81,672	174,800	36,304	.208	.675	.151
2005	122,736	132,802	16,666	22,779	294,983	81,727	176,629	36,627	.207	.670	.152
2010	126,112	138,356	16,790	24,666	305,924	81,494	184,931	39,499	.214	.654	.159
2015	129,179	144,193	17,126	26,231	316,730	80,886	190,784	45,060	.236	.660	.163
2020	132,134	149,430	17,813	27,503	326,879	81,681	192,969	52,230	.271	.694	.164
2025	134,971	153,528	18,866	28,477	335,843	82,655	192,621	60,566	.314	.744	.165
2030	137,461	156,630	20,142	29,156	343,389	83,224	192,283	67,881	.353	.786	.165
2035	139,503	159,036	21,362	29,611	349,513	83,250	194,584	71,679	.368	.796	.164
2040	141,187	161,074	22,264	29,900	354,426	83,270	197,978	73,178	.370	.790	.163
2045	142,665	162,962	22,728	30,094	358,448	83,596	201,201	73,651	.366	.782	.162
2050	143,995	164,832	22,835	30,261	361,923	84,104	202,608	75,211	.371	.786	.161
2055	145,192	166,763	22,793	30,462	365,210	84,585	203,162	77,462	.381	.798	.161
2060	146,265	168,740	22,831	30,721	368,557	84,918	203,070	80,570	.397	.815	.160
2065	147,229	170,677	23,075	31,022	372,004	85,159	204,228	82,617	.405	.822	.160
2070	148,099	172,461	23,483	31,337	375,379	85,433	205,713	84,234	.409	.825	.160
2075	148,896	174,046	23,904	31,637	378,484	85,788	206,911	85,785	.415	.829	.160
2080	149,647	175,492	24,214	31,920	381,272	86,177	207,605	87,491	.421	.837	.160
High Cost alternative:
1997	115,617	125,583	16,537	18,592	276,329	79,969	161,675	34,685	.215	.709	.131
1998	116,336	126,440	16,557	19,168	278,501	80,387	163,200	34,915	.214	.707	.134
1999	116,938	127,442	16,581	19,651	280,612	80,688	164,807	35,117	.213	.703	.136
2000	117,422	128,566	16,612	20,057	282,656	80,799	166,491	35,366	.212	.698	.138
2001	117,790	129,801	16,647	20,402	284,639	80,778	168,208	35,654	.212	.692	.139
2002	118,048	131,137	16,684	20,700	286,569	80,677	169,971	35,921	.211	.686	.140
2003	118,201	132,571	16,720	20,960	288,453	80,498	171,721	36,234	.211	.680	.140
2004	118,257	134,109	16,753	21,181	290,300	80,326	173,369	36,606	.211	.674	.140
2005	118,224	135,746	16,782	21,366	292,118	80,111	175,010	36,997	.211	.669	.140
2010	116,924	145,206	16,893	21,898	300,921	78,156	182,499	40,266	.221	.649	.135
2015	113,945	156,099	17,128	21,944	309,116	75,166	187,672	46,278	.247	.647	.127
2020	109,876	166,944	17,680	21,586	316,086	73,098	189,003	53,985	.286	.672	.117
2025	105,726	175,862	18,641	21,181	321,410	71,183	187,232	62,995	.336	.717	.109
2030	102,509	181,517	19,979	21,189	325,194	69,175	184,838	71,182	.385	.759	.105
2035	99,445	185,107	21,439	21,295	327,287	66,884	184,407	75,997	.412	.775	.103
2040	96,402	187,208	22,738	21,374	327,721	64,783	184,432	78,507	.426	.777	.102
2045	93,518	188,131	23,672	21,381	326,702	63,094	183,756	79,852	.435	.778	.101
2050	90,773	188,260	24,216	21,330	324,579	61,459	180,963	82,158	.454	.794	.100
2055	88,133	187,907	24,482	21,265	321,787	59,848	176,913	85,027	.481	.819	.100
2060	85,633	187,190	24,660	21,214	318,696	58,249	171,721	88,727	.517	.856	.100
2065	83,307	186,081	24,909	21,168	315,466	56,710	167,540	91,215	.544	.883	.100
2070	81,159	184,476	25,259	21,102	311,996	55,272	163,839	92,885	.567	.904	.101
2075	79,171	182,340	25,592	20,987	308,089	53,941	160,080	94,068	.588	.925	.101
2080	77,316	179,798	25,743	20,818	303,676	52,679	156,114	94,883	.608	.945	.101
Note: The aged dependency ratio is the population 65 and over divided by the population 20 to 64. The total dependency ratio is the population under 20 plus the population 65 and over divided by the population 20 to 64. The disunity ratio is the divorced population divided by the married population plus the widowed population.