| Value | Category | Cases | |
|---|---|---|---|
| 2010 | 14 |
5%
|
|
| 2011 | 264 |
95%
|
|
| 9998 | nsp | 0 |
0%
|
| 9999 | manquant | 0 |
0%
|
| Sysmiss | 3690 |