| Value | Category | Cases | |
|---|---|---|---|
| 2008 | 1 |
3.7%
|
|
| 2012 | 1 |
3.7%
|
|
| 2013 | 9 |
33.3%
|
|
| 2014 | 16 |
59.3%
|
|
| Sysmiss | 1402 |