| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 2005 | 23 |
1.2%
|
|
| 2006 | 603 |
32.6%
|
|
| 2007 | 726 |
39.3%
|
|
| 2008 | 405 |
21.9%
|
|
| 2009 | 62 |
3.4%
|
|
| 2010 | 28 |
1.5%
|
|
| 9997 | inconsistent | 0 |
0%
|
| 9998 | don't know | 0 |
0%
|
| Sysmiss | 15240 |