| Year | All units |
Beneficiary units |
|---|---|---|
| 1978 | 14 | 16 |
| 1980 | 13 | 14 |
| 1982 | 14 | 15 |
| 1984 | 13 | 14 |
| 1986 | 14 | 15 |
| 1988 | 13 | 14 |
| 1990 | 12 | 13 |
| 1992 | 13 | 14 |
| 1994 | 15 | 16 |
| 1996 | 17 | 18 |
| 1998 | 17 | 18 |
| 2000 | 18 | 20 |
| 2002 | 20 | 22 |
| 2004 | 20 | 21 |
| SOURCE: Income of the Population 55 or Older, selected years. | ||