| Value | Category | Cases | |
|---|---|---|---|
| 2010 | 2 |
0.3%
|
|
| 2011 | 3 |
0.4%
|
|
| 2012 | 23 |
3.2%
|
|
| 2013 | 394 |
54.3%
|
|
| 2014 | 304 |
41.9%
|
|
| Sysmiss | 1838 |