| Value | Category | Cases | |
|---|---|---|---|
| 2012 | 2 |
5.7%
|
|
| 2014 | 3 |
8.6%
|
|
| 2015 | 28 |
80%
|
|
| 2016 | 2 |
5.7%
|
|
| Sysmiss | 10055 |