| Value | Category | Cases | |
|---|---|---|---|
| 2010 | 7 |
0.5%
|
|
| 2011 | 22 |
1.5%
|
|
| 2012 | 113 |
7.5%
|
|
| 2013 | 349 |
23.2%
|
|
| 2014 | 649 |
43.2%
|
|
| 2015 | 262 |
17.4%
|
|
| 2016 | 100 |
6.7%
|
|
| Sysmiss | 11381 |