| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 2007 | 6 |
1.5%
|
|
| 2008 | 128 |
31.1%
|
|
| 2009 | 140 |
34.1%
|
|
| 2010 | 98 |
23.8%
|
|
| 2011 | 29 |
7.1%
|
|
| 2012 | 10 |
2.4%
|
|
| 9997 | Inconsistent | 0 |
0%
|
| 9998 | Don't know | 0 |
0%
|
| Sysmiss | 4918 |