| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 2006 | 32 |
38.1%
|
|
| 2007 | 32 |
38.1%
|
|
| 2008 | 17 |
20.2%
|
|
| 2009 | 3 |
3.6%
|
|
| 9997 | inconsistent | 0 |
0%
|
| 9998 | don't know | 0 |
0%
|
| Sysmiss | 17003 |