| Year | All units |
Beneficiary units |
|---|---|---|
| 1978 | 62 | 63 |
| 1980 | 66 | 68 |
| 1982 | 68 | 69 |
| 1984 | 68 | 69 |
| 1986 | 67 | 68 |
| 1988 | 68 | 68 |
| 1990 | 69 | 70 |
| 1992 | 67 | 68 |
| 1994 | 67 | 69 |
| 1996 | 63 | 65 |
| 1998 | 61 | 65 |
| 2000 | 59 | 61 |
| 2002 | 55 | 58 |
| 2004 | 55 | 57 |
| SOURCE: Income of the Population 55 or Older, selected years. | ||