| Value | Category | Cases | |
|---|---|---|---|
| 2011 | 9 |
2.7%
|
|
| 2012 | 15 |
4.6%
|
|
| 2013 | 20 |
6.1%
|
|
| 2014 | 54 |
16.5%
|
|
| 2015 | 58 |
17.7%
|
|
| 2016 | 85 |
25.9%
|
|
| 2017 | 86 |
26.2%
|
|
| No | 1 |
0.3%
|