| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 1998 | 5 |
0.2%
|
|
| 1999 | 117 |
3.9%
|
|
| 2000 | 324 |
10.7%
|
|
| 2001 | 628 |
20.7%
|
|
| 2002 | 1070 |
35.3%
|
|
| 2003 | 877 |
28.9%
|
|
| 9997 | inconsistent | 13 |
0.4%
|
| 9998 | dk | 0 |
0%
|
| Sysmiss | 9443 |