| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 2005 | 61 |
0.8%
|
|
| 2006 | 431 |
5.8%
|
|
| 2007 | 859 |
11.6%
|
|
| 2008 | 1725 |
23.2%
|
|
| 2009 | 2365 |
31.8%
|
|
| 2010 | 1977 |
26.6%
|
|
| 9997 | inconsistent | 13 |
0.2%
|
| 9998 | don't know | 0 |
0%
|
| Sysmiss | 9656 |