| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 2007 | 15 |
0.9%
|
|
| 2008 | 231 |
13.8%
|
|
| 2009 | 274 |
16.3%
|
|
| 2010 | 312 |
18.6%
|
|
| 2011 | 437 |
26.1%
|
|
| 2012 | 406 |
24.2%
|
|
| 9997 | Inconsistent | 2 |
0.1%
|
| 9998 | Don't know | 0 |
0%
|
| Sysmiss | 9820 |