| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 2005 | 10 |
0.6%
|
|
| 2006 | 521 |
28.7%
|
|
| 2007 | 725 |
39.9%
|
|
| 2008 | 455 |
25.1%
|
|
| 2009 | 76 |
4.2%
|
|
| 2010 | 29 |
1.6%
|
|
| 9997 | inconsistent | 0 |
0%
|
| 9998 | don't know | 0 |
0%
|
| Sysmiss | 15271 |