| Value | Category | Cases | |
|---|---|---|---|
| 2012 | 27 |
0.6%
|
|
| 2013 | 553 |
12.9%
|
|
| 2014 | 894 |
20.8%
|
|
| 2015 | 893 |
20.8%
|
|
| 2016 | 919 |
21.4%
|
|
| 2017 | 902 |
21%
|
|
| 2018 | 112 |
2.6%
|
|
| Sysmiss | 143 |