| Value | Category | Cases | |
|---|---|---|---|
| 2011 | 107 |
15.6%
|
|
| 2012 | 209 |
30.5%
|
|
| 2013 | 19 |
2.8%
|
|
| 2015 | 1 |
0.1%
|
|
| 2016 | 1 |
0.1%
|
|
| 2018 | 6 |
0.9%
|
|
| Missing value | 343 |
50%
|