| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 1994 | 32 |
9.8%
|
|
| 1995 | 107 |
32.7%
|
|
| 1996 | 88 |
26.9%
|
|
| 1997 | 58 |
17.7%
|
|
| 1998 | 36 |
11%
|
|
| 1999 | 3 |
0.9%
|
|
| 9997 | inconsistent | 3 |
0.9%
|
| 9998 | dk | 0 |
0%
|
| Sysmiss | 6118 |