| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 1999 | 6 |
23.1%
|
|
| 2000 | 1 |
3.8%
|
|
| 2001 | 2 |
7.7%
|
|
| 2002 | 8 |
30.8%
|
|
| 2003 | 9 |
34.6%
|
|
| 9997 | inconsistent | 0 |
0%
|
| 9998 | dk | 0 |
0%
|
| Sysmiss | 9071 |