| Value | Category | Cases | |
|---|---|---|---|
| 21 |
70%
|
||
| 2014 | 1 |
3.3%
|
|
| 2015 | 1 |
3.3%
|
|
| 2016 | 2 |
6.7%
|
|
| 2017 | 1 |
3.3%
|
|
| 2018 | 1 |
3.3%
|
|
| Don't know | 3 |
10%
|