| Year | All units |
Beneficiary units |
|---|---|---|
| 1978 | 32 | 32 |
| 1980 | 34 | 35 |
| 1982 | 35 | 36 |
| 1984 | 38 | 38 |
| 1986 | 40 | 40 |
| 1988 | 42 | 43 |
| 1990 | 44 | 44 |
| 1992 | 45 | 46 |
| 1994 | 42 | 44 |
| 1996 | 41 | 43 |
| 1998 | 43 | 44 |
| 2000 | 41 | 43 |
| 2002 | 41 | 43 |
| 2004 | 41 | 43 |
| SOURCE: Income of the Population 55 or Older, selected years. | ||