| Value | Category | Cases | |
|---|---|---|---|
| 2006 | 1 |
5.6%
|
|
| 2008 | 1 |
5.6%
|
|
| 2009 | 1 |
5.6%
|
|
| 2010 | 1 |
5.6%
|
|
| 2011 | 2 |
11.1%
|
|
| 2012 | 3 |
16.7%
|
|
| 2013 | 1 |
5.6%
|
|
| 2014 | 6 |
33.3%
|
|
| 2015 | 2 |
11.1%
|
|
| 9998 | don't know | 0 |
0%
|
| Sysmiss | 11741 |