Table i. -- Social Security July 1 Population and Dependency Ratios,
by Broad Age Group, Calendar Years 1950-2080
Calendar year
Population (in thousands)
Aged
dependency
ratio 1
Under 20
20 - 64
65 and over
Total
Historical data:
1950 53,895 92,739 12,752 159,386 0.138
1960 72,989 99,842 17,250 190,081 .173
1970 80,672 113,184 20,920 214,776 .185
1980 74,560 134,420 26,148 235,128 .195
1985 73,220 144,860 29,059 247,140 .201
1990 75,112 152,886 31,978 259,977 .209
1995 79,055 159,608 34,211 272,874 .214
Intermediate alternative:
2000 81,379 168,093 35,408 284,880 .211
2005 81,730 177,533 36,813 296,076 .207
2010 81,387 185,811 39,814 307,011 .214
2020 81,785 192,994 53,044 327,822 .275
2030 83,245 192,410 68,394 344,049 .355
2040 83,294 198,365 73,191 354,850 .369
2050 84,160 202,682 75,398 362,241 .372
2060 84,947 203,139 80,796 368,882 .398
2070 85,469 205,837 84,380 375,686 .410
2080 86,177 207,605 87,491 381,272 .421
1 Population aged 65 and over, divided by population aged 20-64.

Note: Totals do not necessarily equal the sums of rounded components.