| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 2006 | 255 |
14.7%
|
|
| 2007 | 677 |
39.1%
|
|
| 2008 | 582 |
33.6%
|
|
| 2009 | 182 |
10.5%
|
|
| 2010 | 37 |
2.1%
|
|
| 9997 | inconsistent | 0 |
0%
|
| 9998 | don't know | 0 |
0%
|
| Sysmiss | 15354 |