| Value | Category | Cases | |
|---|---|---|---|
| 98 | 98. Don't know | 0 |
0%
|
| 2005 | 1 |
8.3%
|
|
| 2006 | 1 |
8.3%
|
|
| 2007 | 1 |
8.3%
|
|
| 2008 | 6 |
50%
|
|
| 2009 | 2 |
16.7%
|
|
| 9998 | 9998. Don't know | 1 |
8.3%
|
| Sysmiss | 295 |