| Value | Category | Cases | |
|---|---|---|---|
| 2012 | 1 |
6.7%
|
|
| 2014 | 4 |
26.7%
|
|
| 2015 | 9 |
60%
|
|
| 2016 | 1 |
6.7%
|
|
| Sysmiss | 44599 |