| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 2006 | 118 |
2.4%
|
|
| 2007 | 449 |
9%
|
|
| 2008 | 932 |
18.8%
|
|
| 2009 | 1805 |
36.3%
|
|
| 2010 | 1662 |
33.4%
|
|
| 9997 | inconsistent | 3 |
0.1%
|
| 9998 | don't know | 0 |
0%
|
| Sysmiss | 12118 |