| Value | Category | Cases | |
|---|---|---|---|
| 2002 | 1 |
0.8%
|
|
| 2005 | 1 |
0.8%
|
|
| 2006 | 1 |
0.8%
|
|
| 2007 | 1 |
0.8%
|
|
| 2008 | 5 |
4%
|
|
| 2009 | 20 |
15.9%
|
|
| 2010 | 21 |
16.7%
|
|
| 2011 | 12 |
9.5%
|
|
| 2012 | 11 |
8.7%
|
|
| 2013 | 18 |
14.3%
|
|
| 2014 | 18 |
14.3%
|
|
| 2015 | 14 |
11.1%
|
|
| 2016 | 3 |
2.4%
|
|
| Sysmiss | 106 |