| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 2007 | 15 |
0.9%
|
|
| 2008 | 239 |
14%
|
|
| 2009 | 279 |
16.4%
|
|
| 2010 | 318 |
18.7%
|
|
| 2011 | 438 |
25.7%
|
|
| 2012 | 412 |
24.2%
|
|
| 9997 | Inconsistent | 2 |
0.1%
|
| 9998 | Don't know | 0 |
0%
|
| Sysmiss | 1446 |