| Value | Category | Cases | |
|---|---|---|---|
| -99 | Refused | 0 |
0%
|
| -98 | Don't Know | 0 |
0%
|
| -97 | Not Applicable | 0 |
0%
|
| 2000 | 1 |
1.8%
|
|
| 2006 | 1 |
1.8%
|
|
| 2009 | 2 |
3.6%
|
|
| 2011 | 7 |
12.7%
|
|
| 2012 | 30 |
54.5%
|
|
| 2013 | 14 |
25.5%
|
|
| Sysmiss | 2167 |