| Value | Category | Cases | |
|---|---|---|---|
| 2002 | 1 |
3.3%
|
|
| 2003 | 1 |
3.3%
|
|
| 2009 | 2 |
6.7%
|
|
| 2011 | 1 |
3.3%
|
|
| 2013 | 1 |
3.3%
|
|
| 2015 | 2 |
6.7%
|
|
| 2016 | 2 |
6.7%
|
|
| 2017 | 4 |
13.3%
|
|
| 2018 | 8 |
26.7%
|
|
| 2019 | 7 |
23.3%
|
|
| Dont Know | 1 |
3.3%
|