| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 2008 | 53 |
5.4%
|
|
| 2009 | 83 |
8.5%
|
|
| 2010 | 156 |
16%
|
|
| 2011 | 316 |
32.4%
|
|
| 2012 | 366 |
37.5%
|
|
| 9997 | Inconsistent | 1 |
0.1%
|
| 9998 | Don't know | 0 |
0%
|
| Sysmiss | 4354 |