| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 1998 | 1 |
2.9%
|
|
| 1999 | 12 |
34.3%
|
|
| 2000 | 16 |
45.7%
|
|
| 2001 | 4 |
11.4%
|
|
| 2002 | 1 |
2.9%
|
|
| 9997 | inconsistent | 1 |
2.9%
|
| 9998 | dk | 0 |
0%
|
| Sysmiss | 12442 |