| Value | Category | Cases | |
|---|---|---|---|
| 2012 | 3 |
1.3%
|
|
| 2013 | 207 |
92%
|
|
| 2014 | 13 |
5.8%
|
|
| 2017 | 1 |
0.4%
|
|
| 2018 | 1 |
0.4%
|
|
| Sysmiss | 1836 |