Historical Statistics of the United States Millennial Edition Online

		Bf284	Bf285	Bf286	Bf287	Bf288	Bf289
		Civilian population covered by public retirement programs			Civilian population covered by other social insurance programs
		OASDHI	Railroad Retirement System	Public employee retirement systems	Workers' compensation	Unemployment insurance	Temporary disability insurance
Row	Year	Million	Million	Million	Million	Million	Million
1	1934	----	1.4	17.0	----	----	----
2	1939	24.0	1.2	2.0	22.0	22.6	----
3	1944	30.8	1.7	4.7	33.0	31.6	0.2
4	1949	34.3	1.4	4.4	35.3	33.1	5.3
5	1954	45.3	1.2	4.6	40.4	37.2	10.7

6	1955	51.8	1.3	4.7	42.9	41.7	11.2
7	1956	53.2	1.2	4.5	44.1	43.8	11.5
8	1957	53.7	1.1	3.9	43.1	43.2	11.2
9	1958	53.4	1.0	3.9	42.7	42.6	11.0
10	1959	55.4	0.9	3.8	45.1	44.1	11.4

11	1960	55.7	0.9	3.9	44.6	43.7	11.3
12	1961	56.1	0.8	4.0	46.0	44.6	11.8
13	1962	57.3	0.8	4.0	46.8	45.4	12.3
14	1963	58.5	0.8	3.7	48.2	46.3	12.5
15	1964	60.1	0.8	3.9	50.0	47.9	12.7

16	1965	62.8	0.8	4.1	52.5	50.3	13.3
17	1966	64.9	0.7	4.6	55.1	52.8	13.7
18	1967	65.7	0.7	4.6	56.3	53.8	14.0
19	1968	67.1	0.7	4.6	58.3	55.5	14.2
20	1969	68.6	0.7	3.9	60.1	57.0	14.8

21	1970	69.1	0.6	5.5	59.0	55.8	14.6
22	1971	69.8	0.6	5.2	60.5	57.1	14.8
23	1972	72.6	0.6	5.2	63.7	66.0	16.0
24	1973	75.6	0.6	5.3	68.0	69.0	16.0
25	1974	75.2	0.6	5.3	67.8	69.5	15.7

26	1975	75.7	0.5	6.0	68.6	69.7	15.7
27	1976	80.3	0.5	6.1	70.4	72.1	16.2
28	1977	82.1	0.5	6.2	74.2	75.8	16.7
29	1978	83.2	0.5	6.4	74.5	85.8	18.0
30	1979	87.6	0.5	6.4	77.4	87.9	18.1

31	1980	89.3	0.5	6.6	79.1	90.4	18.4
32	1981	89.5	0.5	6.4	79.8	89.9	18.4
33	1982	88.9	0.4	6.4	77.8	87.9	18.1
34	1983	92.7	0.4	6.4	80.9	91.3	18.7
35	1984	98.0	0.4	6.0	83.4	95.8	18.9

36	1985	100.3	0.3	6.0	85.1	98.2	19.8
37	1986	102.9	0.3	5.9	87.2	100.2	20.3
38	1987	106.0	0.3	5.9	90.0	103.7	21.6
39	1988	108.4	0.3	5.8	92.8	106.9	21.8
40	1989	110.3	0.3	5.8	95.3	109.1	----