| Value | Category | Cases | |
|---|---|---|---|
| 2010 | 3 |
15.8%
|
|
| 2011 | 1 |
5.3%
|
|
| 2013 | 6 |
31.6%
|
|
| 2015 | 4 |
21.1%
|
|
| 2016 | 3 |
15.8%
|
|
| 2018 | 2 |
10.5%
|
|
| Sysmiss | 413086 |