| Value | Category | Cases | |
|---|---|---|---|
| 2009 | 1 |
0.4%
|
|
| 2010 | 1 |
0.4%
|
|
| 2012 | 28 |
11.2%
|
|
| 2013 | 82 |
32.7%
|
|
| 2014 | 139 |
55.4%
|
|
| Sysmiss | 2313 |