| Value | Category | Cases | |
|---|---|---|---|
| 2010 | 1 |
0.1%
|
|
| 2011 | 2 |
0.2%
|
|
| 2012 | 17 |
1.3%
|
|
| 2013 | 53 |
4.1%
|
|
| 2014 | 113 |
8.7%
|
|
| 2015 | 279 |
21.4%
|
|
| 2016 | 595 |
45.6%
|
|
| 2017 | 245 |
18.8%
|
|
| Sysmiss | 1435 |