| Value | Category | Cases | |
|---|---|---|---|
| 1995 | 1 |
4%
|
|
| 2011 | 1 |
4%
|
|
| 2013 | 4 |
16%
|
|
| 2015 | 2 |
8%
|
|
| 2017 | 6 |
24%
|
|
| 2018 | 11 |
44%
|