| Value | Category | Cases | |
|---|---|---|---|
| 2011 | 81 |
14.9%
|
|
| 2012 | 151 |
27.9%
|
|
| 2013 | 10 |
1.8%
|
|
| 2014 | 5 |
0.9%
|
|
| 2015 | 18 |
3.3%
|
|
| 2016 | 5 |
0.9%
|
|
| 2018 | 1 |
0.2%
|
|
| Missing value | 271 |
50%
|