| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 2005 | 25 |
1.3%
|
|
| 2006 | 611 |
32.7%
|
|
| 2007 | 729 |
39%
|
|
| 2008 | 411 |
22%
|
|
| 2009 | 63 |
3.4%
|
|
| 2010 | 28 |
1.5%
|
|
| 9997 | inconsistent | 0 |
0%
|
| 9998 | don't know | 0 |
0%
|
| Sysmiss | 15220 |