| Value | Category | Cases | |
|---|---|---|---|
| 2010 | 1 |
1.3%
|
|
| 2011 | 5 |
6.4%
|
|
| 2012 | 6 |
7.7%
|
|
| 2013 | 10 |
12.8%
|
|
| 2014 | 28 |
35.9%
|
|
| 2015 | 26 |
33.3%
|
|
| 2016 | 2 |
2.6%
|
|
| Sysmiss | 44536 |