| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 1994 | 206 |
9.8%
|
|
| 1995 | 341 |
16.3%
|
|
| 1996 | 365 |
17.4%
|
|
| 1997 | 523 |
24.9%
|
|
| 1998 | 612 |
29.2%
|
|
| 1999 | 41 |
2%
|
|
| 9997 | inconsistent | 9 |
0.4%
|
| 9998 | dk | 0 |
0%
|
| Sysmiss | 3856 |