| Value | Category | Cases | |
|---|---|---|---|
| 2010 | 1 |
0.1%
|
|
| 2013 | 51 |
5.6%
|
|
| 2014 | 540 |
59.6%
|
|
| 2015 | 314 |
34.7%
|
|
| Sysmiss | 10924 |