| Value | Category | Cases | |
|---|---|---|---|
| 2001 | 2 |
3.4%
|
|
| 2002 | 1 |
1.7%
|
|
| 2003 | 1 |
1.7%
|
|
| 2006 | 1 |
1.7%
|
|
| 2008 | 1 |
1.7%
|
|
| 2010 | 2 |
3.4%
|
|
| 2011 | 1 |
1.7%
|
|
| 2013 | 4 |
6.8%
|
|
| 2014 | 3 |
5.1%
|
|
| 2015 | 1 |
1.7%
|
|
| 2016 | 8 |
13.6%
|
|
| 2017 | 14 |
23.7%
|
|
| 2018 | 19 |
32.2%
|
|
| 2019 | 1 |
1.7%
|