| Value | Category | Cases | |
|---|---|---|---|
| 1993 | 1 |
0.4%
|
|
| 2000 | 1 |
0.4%
|
|
| 2001 | 4 |
1.4%
|
|
| 2002 | 4 |
1.4%
|
|
| 2003 | 1 |
0.4%
|
|
| 2004 | 5 |
1.8%
|
|
| 2005 | 8 |
2.9%
|
|
| 2006 | 11 |
4%
|
|
| 2007 | 17 |
6.2%
|
|
| 2008 | 35 |
12.7%
|
|
| 2009 | 188 |
68.1%
|
|
| 2010 | 1 |
0.4%
|
|
| Sysmiss | 4113 |