| Value |
Category |
| -7 |
|
| 1972 |
|
| 1975 |
|
| 1976 |
|
| 1978 |
|
| 1979 |
|
| 1980 |
|
| 1982 |
|
| 1983 |
|
| 1984 |
|
| 1985 |
|
| 1988 |
|
| 1989 |
|
| 1990 |
|
| 1995 |
|
| Sysmiss |
|
Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.
