| قيمة | فئة | حالات | |
|---|---|---|---|
| 2012 | 1 |
1.6%
|
|
| 2013 | 4 |
6.3%
|
|
| 2014 | 20 |
31.3%
|
|
| 2015 | 39 |
60.9%
|
|
| Sysmiss | 3 |