| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 2009 | 2 |
1%
|
|
| 2010 | 26 |
12.9%
|
|
| 2011 | 31 |
15.3%
|
|
| 2012 | 36 |
17.8%
|
|
| 2013 | 50 |
24.8%
|
|
| 2014 | 57 |
28.2%
|
|
| 9997 | inconsistent | 0 |
0%
|
| 9998 | don't know | 0 |
0%
|
| Sysmiss | 6246 |