| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 2008 | 428 |
14.6%
|
|
| 2009 | 759 |
25.9%
|
|
| 2010 | 809 |
27.6%
|
|
| 2011 | 644 |
21.9%
|
|
| 2012 | 222 |
7.6%
|
|
| 2013 | 49 |
1.7%
|
|
| 2014 | 24 |
0.8%
|
|
| Sysmiss | 5176 |