| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 1980 | 1 |
2.5%
|
|
| 1984 | 3 |
7.5%
|
|
| 1986 | 3 |
7.5%
|
|
| 1987 | 3 |
7.5%
|
|
| 1988 | 1 |
2.5%
|
|
| 1989 | 5 |
12.5%
|
|
| 1990 | 2 |
5%
|
|
| 1991 | 2 |
5%
|
|
| 1992 | 1 |
2.5%
|
|
| 1993 | 3 |
7.5%
|
|
| 1994 | 4 |
10%
|
|
| 1995 | 1 |
2.5%
|
|
| 1996 | 2 |
5%
|
|
| 1997 | 6 |
15%
|
|
| 1999 | 3 |
7.5%
|
|
| Sysmiss | 834 |