Table 25. -- Retirement Age at Selected Aged Dependency Ratios by Calendar Year and Alternative
Alternative and year	Dependency ratio
	.20	.25	.30
1940	59	57	55
1950	61	59	57
1960	64	61	59
1965	64	62	60
1970	65	62	60
1975	65	62	60
1980	65	63	60
1985	65	63	61
1990	66	63	61
1995	66	63	60
Low Cost alternative:
2000	66	63	60
2005	66	63	60
2010	66	63	61
2015	67	64	62
2020	68	66	64
2025	69	67	65
2030	71	68	66
2035	71	69	67
2040	72	69	66
2045	71	68	66
2050	71	68	66
2055	71	68	66
2060	71	68	66
2065	71	68	66
2070	71	68	66
2075	71	68	66
2080	71	68	66
Intermediate alternative:
2000	66	63	60
2005	66	63	61
2010	66	64	62
2015	67	65	63
2020	69	66	64
2025	70	68	66
2030	72	69	67
2035	73	70	68
2040	74	71	69
2045	74	71	68
2050	73	71	68
2055	73	71	69
2060	74	71	69
2065	74	72	70
2070	75	72	70
2075	75	72	70
2080	75	72	70
High Cost alternative:
2000	66	63	60
2005	66	63	61
2010	67	64	62
2015	68	65	63
2020	69	67	65
2025	71	69	67
2030	73	70	68
2035	74	72	70
2040	75	73	71
2045	76	73	71
2050	76	73	71
2055	76	74	72
2060	77	74	72
2065	78	75	73
2070	79	76	74
2075	80	77	75
2080	80	78	75
Note: The aged dependency ratio calculated at a given age is the ratio of the number of people in the population as of January 1 who are as old or older than the given age to the number of people in the population as of January 1 who are between age 19 and the given age.