| Value | Category | Cases | |
|---|---|---|---|
| 2006 | 1 |
3.7%
|
|
| 2008 | 3 |
11.1%
|
|
| 2009 | 5 |
18.5%
|
|
| 2010 | 2 |
7.4%
|
|
| 2011 | 4 |
14.8%
|
|
| 2012 | 4 |
14.8%
|
|
| 2013 | 2 |
7.4%
|
|
| 2014 | 3 |
11.1%
|
|
| 2015 | 2 |
7.4%
|
|
| 2016 | 1 |
3.7%
|
|
| Sysmiss | 12380 |