| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 2007 | 3 |
0.2%
|
|
| 2008 | 201 |
12.7%
|
|
| 2009 | 251 |
15.8%
|
|
| 2010 | 289 |
18.2%
|
|
| 2011 | 421 |
26.5%
|
|
| 2012 | 415 |
26.1%
|
|
| 9997 | Inconsistent | 7 |
0.4%
|
| 9998 | Don't know | 0 |
0%
|
| Sysmiss | 9910 |