| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 2005 | 2 |
0%
|
|
| 2006 | 266 |
4.4%
|
|
| 2007 | 618 |
10.2%
|
|
| 2008 | 1308 |
21.6%
|
|
| 2009 | 2052 |
33.8%
|
|
| 2010 | 1819 |
30%
|
|
| 9997 | inconsistent | 3 |
0%
|
| 9998 | don't know | 0 |
0%
|
| Sysmiss | 11019 |