| Value | Category | Cases | |
|---|---|---|---|
| 2011 | 3 |
0.1%
|
|
| 2012 | 14 |
0.2%
|
|
| 2013 | 14 |
0.2%
|
|
| 2014 | 162 |
2.8%
|
|
| 2015 | 5678 |
96.7%
|
|
| Sysmiss | 1485 |