| Value | Category | Cases | |
|---|---|---|---|
| 2000 | 10 |
2.2%
|
|
| 2002 | 14 |
3.1%
|
|
| 2003 | 2 |
0.4%
|
|
| 2004 | 12 |
2.7%
|
|
| 2005 | 13 |
2.9%
|
|
| 2006 | 116 |
26%
|
|
| 2007 | 35 |
7.8%
|
|
| 2008 | 53 |
11.9%
|
|
| 2009 | 92 |
20.6%
|
|
| 2010 | 74 |
16.6%
|
|
| 2011 | 1 |
0.2%
|
|
| 2012 | 25 |
5.6%
|
|
| Sysmiss | 16 |