| Value | Category | Cases | |
|---|---|---|---|
| 1998 | 1 |
5.6%
|
|
| 2010 | 2 |
11.1%
|
|
| 2012 | 1 |
5.6%
|
|
| 2015 | 13 |
72.2%
|
|
| 2018 | 1 |
5.6%
|