| Value | Category | Cases | |
|---|---|---|---|
| 1988 | 1 |
0.9%
|
|
| 1990 | 1 |
0.9%
|
|
| 1991 | 1 |
0.9%
|
|
| 1995 | 2 |
1.9%
|
|
| 2000 | 3 |
2.8%
|
|
| 2003 | 2 |
1.9%
|
|
| 2004 | 1 |
0.9%
|
|
| 2005 | 5 |
4.7%
|
|
| 2006 | 12 |
11.2%
|
|
| 2007 | 21 |
19.6%
|
|
| 2008 | 12 |
11.2%
|
|
| 2009 | 12 |
11.2%
|
|
| 2010 | 33 |
30.8%
|
|
| 2011 | 1 |
0.9%
|
|
| 9998 | Ne sait pas | 0 |
0%
|