| Value | Category | Cases | |
|---|---|---|---|
| 2012 | 3 |
0.6%
|
|
| 2013 | 1 |
0.2%
|
|
| 2014 | 2 |
0.4%
|
|
| 2015 | 6 |
1.2%
|
|
| 2016 | 17 |
3.3%
|
|
| 2017 | 15 |
2.9%
|
|
| 2018 | 461 |
90.6%
|
|
| 2019 | 4 |
0.8%
|
|
| Sysmiss | 1501 |