| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 2007 | 3 |
0.7%
|
|
| 2008 | 112 |
27.2%
|
|
| 2009 | 137 |
33.3%
|
|
| 2010 | 109 |
26.5%
|
|
| 2011 | 41 |
10%
|
|
| 2012 | 10 |
2.4%
|
|
| 9997 | Inconsistent | 0 |
0%
|
| 9998 | Don't know | 0 |
0%
|
| Sysmiss | 4917 |