| Value | Category | Cases | |
|---|---|---|---|
| 2011 | 26 |
7.5%
|
|
| 2012 | 158 |
45.7%
|
|
| 2013 | 8 |
2.3%
|
|
| 2014 | 1 |
0.3%
|
|
| 2015 | 1 |
0.3%
|
|
| 2016 | 2 |
0.6%
|
|
| Missing value | 150 |
43.4%
|