| Value | Category | Cases | |
|---|---|---|---|
| 2003 | 1 |
0.1%
|
|
| 2006 | 1 |
0.1%
|
|
| 2008 | 1 |
0.1%
|
|
| 2009 | 3 |
0.4%
|
|
| 2010 | 25 |
3.3%
|
|
| 2011 | 91 |
12.1%
|
|
| 2012 | 190 |
25.2%
|
|
| 2013 | 156 |
20.7%
|
|
| 2014 | 236 |
31.3%
|
|
| 2015 | 36 |
4.8%
|
|
| 2016 | 14 |
1.9%
|
|
| Sysmiss | 12129 |