| Value | Category | Cases | |
|---|---|---|---|
| 2010 | 1 |
0.1%
|
|
| 2012 | 6 |
0.6%
|
|
| 2013 | 47 |
4.6%
|
|
| 2014 | 80 |
7.8%
|
|
| 2015 | 187 |
18.3%
|
|
| 2016 | 431 |
42.1%
|
|
| 2017 | 271 |
26.5%
|
|
| Sysmiss | 1717 |