| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 1981 | 1 |
7.7%
|
|
| 1983 | 1 |
7.7%
|
|
| 1984 | 2 |
15.4%
|
|
| 1986 | 2 |
15.4%
|
|
| 1987 | 1 |
7.7%
|
|
| 1989 | 2 |
15.4%
|
|
| 1991 | 2 |
15.4%
|
|
| 1993 | 1 |
7.7%
|
|
| 1995 | 1 |
7.7%
|
|
| Sysmiss | 861 |