| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 1998 | 5 |
0.7%
|
|
| 1999 | 195 |
26.9%
|
|
| 2000 | 295 |
40.7%
|
|
| 2001 | 171 |
23.6%
|
|
| 2002 | 42 |
5.8%
|
|
| 2003 | 13 |
1.8%
|
|
| 9997 | inconsistent | 3 |
0.4%
|
| 9998 | dk | 0 |
0%
|
| Sysmiss | 11753 |