| Value | Category | Cases | |
|---|---|---|---|
| 2012 | 1 |
0.6%
|
|
| 2013 | 57 |
31.7%
|
|
| 2014 | 43 |
23.9%
|
|
| 2015 | 30 |
16.7%
|
|
| 2016 | 9 |
5%
|
|
| 2017 | 1 |
0.6%
|
|
| 2018 | 3 |
1.7%
|
|
| 2019 | 2 |
1.1%
|
|
| Missing value | 34 |
18.9%
|