| Value | Category | Cases | |
|---|---|---|---|
| 2000 | 3 |
2.3%
|
|
| 2003 | 1 |
0.8%
|
|
| 2006 | 1 |
0.8%
|
|
| 2007 | 2 |
1.6%
|
|
| 2008 | 3 |
2.3%
|
|
| 2009 | 5 |
3.9%
|
|
| 2010 | 15 |
11.6%
|
|
| 2011 | 9 |
7%
|
|
| 2012 | 10 |
7.8%
|
|
| 2013 | 27 |
20.9%
|
|
| 2014 | 22 |
17.1%
|
|
| 2015 | 24 |
18.6%
|
|
| 2016 | 7 |
5.4%
|
|
| Sysmiss | 210 |