| Value | Category | Cases | |
|---|---|---|---|
| 2013 | 3 |
0.8%
|
|
| 2014 | 50 |
13.2%
|
|
| 2015 | 36 |
9.5%
|
|
| 2016 | 12 |
3.2%
|
|
| 2017 | 4 |
1.1%
|
|
| 2018 | 3 |
0.8%
|
|
| 2021 | 2 |
0.5%
|
|
| Missing value | 270 |
71.1%
|