| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 2008 | 144 |
10.4%
|
|
| 2009 | 237 |
17.1%
|
|
| 2010 | 251 |
18.2%
|
|
| 2011 | 369 |
26.7%
|
|
| 2012 | 378 |
27.4%
|
|
| 9997 | Inconsistent | 3 |
0.2%
|
| 9998 | Don't know | 0 |
0%
|
| Sysmiss | 1767 |