| Value | Category | Cases | |
|---|---|---|---|
| 2000 | 1 |
0.3%
|
|
| 2003 | 1 |
0.3%
|
|
| 2006 | 3 |
1%
|
|
| 2009 | 3 |
1%
|
|
| 2010 | 7 |
2.3%
|
|
| 2011 | 7 |
2.3%
|
|
| 2012 | 16 |
5.4%
|
|
| 2013 | 70 |
23.5%
|
|
| 2014 | 129 |
43.3%
|
|
| 2015 | 61 |
20.5%
|
|
| Sysmiss | 894 |