| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 2007 | 5 |
0.3%
|
|
| 2008 | 220 |
13.1%
|
|
| 2009 | 263 |
15.7%
|
|
| 2010 | 315 |
18.8%
|
|
| 2011 | 440 |
26.3%
|
|
| 2012 | 428 |
25.6%
|
|
| 9997 | Inconsistent | 3 |
0.2%
|
| 9998 | Don't know | 0 |
0%
|
| Sysmiss | 1475 |