| Value | Category | Cases | |
|---|---|---|---|
| 2004 | 3 |
4.3%
|
|
| 2006 | 3 |
4.3%
|
|
| 2007 | 3 |
4.3%
|
|
| 2008 | 1 |
1.4%
|
|
| 2010 | 5 |
7.1%
|
|
| 2011 | 4 |
5.7%
|
|
| 2012 | 5 |
7.1%
|
|
| 2013 | 6 |
8.6%
|
|
| 2014 | 9 |
12.9%
|
|
| 2015 | 8 |
11.4%
|
|
| 2016 | 8 |
11.4%
|
|
| 2017 | 9 |
12.9%
|
|
| 2018 | 6 |
8.6%
|
|
| Sysmiss | 1577 |