| Value | Category | Cases | |
|---|---|---|---|
| -99 | Refused | 0 |
0%
|
| -98 | Don't Know | 0 |
0%
|
| -97 | Not Applicable | 0 |
0%
|
| 2003 | 1 |
2.7%
|
|
| 2006 | 1 |
2.7%
|
|
| 2007 | 1 |
2.7%
|
|
| 2010 | 1 |
2.7%
|
|
| 2011 | 6 |
16.2%
|
|
| 2012 | 22 |
59.5%
|
|
| 2013 | 5 |
13.5%
|
|
| Sysmiss | 2185 |