| Value | Category | Cases | |
|---|---|---|---|
| 1981 | 1 |
2.3%
|
|
| 1990 | 1 |
2.3%
|
|
| 1991 | 4 |
9.3%
|
|
| 1996 | 3 |
7%
|
|
| 1998 | 2 |
4.7%
|
|
| 2001 | 3 |
7%
|
|
| 2003 | 2 |
4.7%
|
|
| 2005 | 3 |
7%
|
|
| 2006 | 1 |
2.3%
|
|
| 2007 | 3 |
7%
|
|
| 2008 | 1 |
2.3%
|
|
| 2009 | 2 |
4.7%
|
|
| 2010 | 1 |
2.3%
|
|
| 2011 | 3 |
7%
|
|
| 9998 | ne sait pas | 13 |
30.2%
|
| 9999 | manquant | 0 |
0%
|
| Sysmiss | 6621 |