| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 2006 | 7 |
14.3%
|
|
| 2007 | 17 |
34.7%
|
|
| 2008 | 15 |
30.6%
|
|
| 2009 | 8 |
16.3%
|
|
| 2010 | 2 |
4.1%
|
|
| 9997 | inconsistent | 0 |
0%
|
| 9998 | don't know | 0 |
0%
|
| Sysmiss | 17038 |