| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 2005 | 8 |
0.4%
|
|
| 2006 | 514 |
28.6%
|
|
| 2007 | 721 |
40.1%
|
|
| 2008 | 452 |
25.1%
|
|
| 2009 | 76 |
4.2%
|
|
| 2010 | 29 |
1.6%
|
|
| 9997 | inconsistent | 0 |
0%
|
| 9998 | don't know | 0 |
0%
|
| Sysmiss | 15287 |