| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 2008 | 57 |
5.6%
|
|
| 2009 | 84 |
8.2%
|
|
| 2010 | 171 |
16.7%
|
|
| 2011 | 331 |
32.4%
|
|
| 2012 | 378 |
37%
|
|
| 9997 | Inconsistent | 0 |
0%
|
| 9998 | Don't know | 0 |
0%
|
| Sysmiss | 4308 |