| Value | Category | Cases | |
|---|---|---|---|
| 2004 | 2 |
4.5%
|
|
| 2007 | 1 |
2.3%
|
|
| 2009 | 5 |
11.4%
|
|
| 2010 | 4 |
9.1%
|
|
| 2011 | 7 |
15.9%
|
|
| 2012 | 6 |
13.6%
|
|
| 2013 | 4 |
9.1%
|
|
| 2014 | 7 |
15.9%
|
|
| 2015 | 7 |
15.9%
|
|
| 2016 | 1 |
2.3%
|
|
| Sysmiss | 12363 |