| Value | Category | Cases | |
|---|---|---|---|
| 2003 | 1 |
0.8%
|
|
| 2004 | 1 |
0.8%
|
|
| 2005 | 1 |
0.8%
|
|
| 2006 | 1 |
0.8%
|
|
| 2007 | 3 |
2.3%
|
|
| 2008 | 1 |
0.8%
|
|
| 2009 | 1 |
0.8%
|
|
| 2010 | 6 |
4.5%
|
|
| 2011 | 12 |
9.1%
|
|
| 2012 | 27 |
20.5%
|
|
| 2013 | 27 |
20.5%
|
|
| 2014 | 42 |
31.8%
|
|
| 2015 | 9 |
6.8%
|
|
| Sysmiss | 1060 |