| Value | Category | Cases | |
|---|---|---|---|
| 2005 | 1 |
4.8%
|
|
| 2006 | 1 |
4.8%
|
|
| 2007 | 2 |
9.5%
|
|
| 2010 | 1 |
4.8%
|
|
| 2011 | 2 |
9.5%
|
|
| 2013 | 3 |
14.3%
|
|
| 2014 | 7 |
33.3%
|
|
| 2015 | 4 |
19%
|
|
| 9998 | don't know | 0 |
0%
|
| Sysmiss | 11738 |