| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 1998 | 29 |
0.8%
|
|
| 1999 | 189 |
5.3%
|
|
| 2000 | 416 |
11.6%
|
|
| 2001 | 857 |
23.9%
|
|
| 2002 | 1241 |
34.6%
|
|
| 2003 | 820 |
22.9%
|
|
| 9997 | inconsistent | 36 |
1%
|
| 9998 | dk | 0 |
0%
|
| Sysmiss | 8889 |