| Value | Category | Cases | |
|---|---|---|---|
| 98 | Don't know | 0 |
0%
|
| 998 | Don't know | 0 |
0%
|
| 1995 | 1 |
2.6%
|
|
| 1997 | 1 |
2.6%
|
|
| 1998 | 1 |
2.6%
|
|
| 2002 | 1 |
2.6%
|
|
| 2004 | 3 |
7.9%
|
|
| 2005 | 1 |
2.6%
|
|
| 2006 | 1 |
2.6%
|
|
| 2007 | 5 |
13.2%
|
|
| 2008 | 5 |
13.2%
|
|
| 2009 | 7 |
18.4%
|
|
| 2010 | 4 |
10.5%
|
|
| 2011 | 6 |
15.8%
|
|
| 9998 | Don't know | 2 |
5.3%
|
| 9999 | Missing | 0 |
0%
|
| 99998 | Don't know | 0 |
0%
|
| Sysmiss | 1672 |