| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 2008 | 12 |
4.5%
|
|
| 2009 | 77 |
29.2%
|
|
| 2010 | 73 |
27.7%
|
|
| 2011 | 61 |
23.1%
|
|
| 2012 | 41 |
15.5%
|
|
| 9997 | Inconsistent | 0 |
0%
|
| 9998 | Don't know | 0 |
0%
|
| Sysmiss | 5065 |