| Value | Category | Cases | |
|---|---|---|---|
| 1997 | 1 |
2%
|
|
| 2003 | 1 |
2%
|
|
| 2008 | 1 |
2%
|
|
| 2009 | 1 |
2%
|
|
| 2010 | 1 |
2%
|
|
| 2013 | 2 |
4.1%
|
|
| 2014 | 5 |
10.2%
|
|
| 2015 | 6 |
12.2%
|
|
| 2016 | 6 |
12.2%
|
|
| 2017 | 7 |
14.3%
|
|
| 2018 | 13 |
26.5%
|
|
| 2019 | 5 |
10.2%
|