| Value | Category | Cases | |
|---|---|---|---|
| 1998 | 1 |
1.6%
|
|
| 1999 | 1 |
1.6%
|
|
| 2001 | 1 |
1.6%
|
|
| 2002 | 1 |
1.6%
|
|
| 2004 | 2 |
3.2%
|
|
| 2005 | 2 |
3.2%
|
|
| 2006 | 2 |
3.2%
|
|
| 2008 | 2 |
3.2%
|
|
| 2009 | 9 |
14.3%
|
|
| 2010 | 19 |
30.2%
|
|
| 2011 | 8 |
12.7%
|
|
| 2012 | 12 |
19%
|
|
| 2013 | 3 |
4.8%
|
|
| Sysmiss | 10853 |