| Value | Category | Cases | |
|---|---|---|---|
| 2005 | 2 |
13.3%
|
|
| 2006 | 1 |
6.7%
|
|
| 2009 | 1 |
6.7%
|
|
| 2011 | 2 |
13.3%
|
|
| 2012 | 2 |
13.3%
|
|
| 2013 | 1 |
6.7%
|
|
| 2014 | 3 |
20%
|
|
| 2015 | 3 |
20%
|
|
| 9997 | Inconsistent | 0 |
0%
|
| 9998 | Don't know | 0 |
0%
|
| Sysmiss | 6466 |