| Value | Category | Cases | |
|---|---|---|---|
| 1 | 2013 | 91 |
38.7%
|
| 2 | 2014 | 59 |
25.1%
|
| 3 | 2015 | 41 |
17.4%
|
| 4 | 2016 | 8 |
3.4%
|
| 5 | 2017 | 3 |
1.3%
|
| 6 | 2018 | 3 |
1.3%
|
| 7 | 2019 | 2 |
0.9%
|
| Missing value | 28 |
11.9%
|