| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 1977 | 1 |
2%
|
|
| 1978 | 3 |
6%
|
|
| 1979 | 1 |
2%
|
|
| 1980 | 7 |
14%
|
|
| 1981 | 5 |
10%
|
|
| 1982 | 4 |
8%
|
|
| 1983 | 5 |
10%
|
|
| 1984 | 2 |
4%
|
|
| 1986 | 2 |
4%
|
|
| 1987 | 7 |
14%
|
|
| 1988 | 4 |
8%
|
|
| 1989 | 2 |
4%
|
|
| 1990 | 4 |
8%
|
|
| 1991 | 1 |
2%
|
|
| 1992 | 2 |
4%
|
|
| Sysmiss | 5038 |