| Value | Category | Cases | |
|---|---|---|---|
| 98 | Don't know | 0 |
0%
|
| 998 | Don't know | 0 |
0%
|
| 2002 | 2 |
4.5%
|
|
| 2005 | 5 |
11.4%
|
|
| 2006 | 3 |
6.8%
|
|
| 2007 | 8 |
18.2%
|
|
| 2008 | 2 |
4.5%
|
|
| 2009 | 4 |
9.1%
|
|
| 2010 | 5 |
11.4%
|
|
| 2011 | 8 |
18.2%
|
|
| 2012 | 6 |
13.6%
|
|
| 9998 | Don't know | 1 |
2.3%
|
| Sysmiss | 1495 |