| Value | Category | Cases | |
|---|---|---|---|
| -99 | Do not know | 0 |
0%
|
| 2008 | 1 |
16.7%
|
|
| 2009 | 1 |
16.7%
|
|
| 2012 | 1 |
16.7%
|
|
| 2013 | 1 |
16.7%
|
|
| 2014 | 1 |
16.7%
|
|
| 2017 | 1 |
16.7%
|
|
| Sysmiss | 122 |