| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 2007 | 51 |
2.4%
|
|
| 2008 | 593 |
27.4%
|
|
| 2009 | 571 |
26.3%
|
|
| 2010 | 392 |
18.1%
|
|
| 2011 | 331 |
15.3%
|
|
| 2012 | 230 |
10.6%
|
|
| 9997 | Inconsistent | 0 |
0%
|
| 9998 | Don't know | 0 |
0%
|
| Sysmiss | 2314 |