| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 2009 | 2 |
3.3%
|
|
| 2010 | 10 |
16.4%
|
|
| 2011 | 10 |
16.4%
|
|
| 2012 | 5 |
8.2%
|
|
| 2013 | 12 |
19.7%
|
|
| 2014 | 22 |
36.1%
|
|
| 9997 | inconsistent | 0 |
0%
|
| 9998 | don't know | 0 |
0%
|
| Sysmiss | 6387 |