| Value | Category | Cases | |
|---|---|---|---|
| 1981 | 1 |
1.9%
|
|
| 1996 | 1 |
1.9%
|
|
| 1998 | 2 |
3.8%
|
|
| 2002 | 1 |
1.9%
|
|
| 2004 | 1 |
1.9%
|
|
| 2005 | 3 |
5.7%
|
|
| 2006 | 4 |
7.5%
|
|
| 2007 | 7 |
13.2%
|
|
| 2008 | 9 |
17%
|
|
| 2009 | 7 |
13.2%
|
|
| 2010 | 14 |
26.4%
|
|
| 9998 | Ne sait pas | 3 |
5.7%
|
| Sysmiss | 15 |