| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 1994 | 59 |
14.5%
|
|
| 1995 | 143 |
35%
|
|
| 1996 | 111 |
27.2%
|
|
| 1997 | 65 |
15.9%
|
|
| 1998 | 22 |
5.4%
|
|
| 1999 | 4 |
1%
|
|
| 9997 | inconsistent | 4 |
1%
|
| 9998 | dk | 0 |
0%
|
| Sysmiss | 6037 |