| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 2005 | 61 |
3.2%
|
|
| 2006 | 681 |
35.6%
|
|
| 2007 | 734 |
38.3%
|
|
| 2008 | 358 |
18.7%
|
|
| 2009 | 53 |
2.8%
|
|
| 2010 | 27 |
1.4%
|
|
| 9997 | inconsistent | 1 |
0.1%
|
| 9998 | don't know | 0 |
0%
|
| Sysmiss | 15172 |