| Value | Category | Cases | |
|---|---|---|---|
| 2015 | 1 |
4.8%
|
|
| 2016 | 1 |
4.8%
|
|
| 2017 | 1 |
4.8%
|
|
| 2018 | 16 |
76.2%
|
|
| 2019 | 2 |
9.5%
|
|
| Sysmiss | 732 |