| Value | Category | Cases | |
|---|---|---|---|
| 98 | Don't know | 0 |
0%
|
| 99 | Missing | 0 |
0%
|
| 1993 | 1 |
0.3%
|
|
| 1994 | 2 |
0.6%
|
|
| 1995 | 2 |
0.6%
|
|
| 1996 | 1 |
0.3%
|
|
| 1997 | 5 |
1.6%
|
|
| 1998 | 3 |
0.9%
|
|
| 1999 | 9 |
2.8%
|
|
| 2000 | 5 |
1.6%
|
|
| 2001 | 10 |
3.2%
|
|
| 2002 | 8 |
2.5%
|
|
| 2003 | 10 |
3.2%
|
|
| 2004 | 16 |
5%
|
|
| 2005 | 16 |
5%
|
|
| 2006 | 20 |
6.3%
|
|
| 2007 | 22 |
6.9%
|
|
| 2008 | 33 |
10.4%
|
|
| 2009 | 33 |
10.4%
|
|
| 2010 | 25 |
7.9%
|
|
| 2011 | 13 |
4.1%
|
|
| 2012 | 8 |
2.5%
|
|
| 9998 | Don't know | 75 |
23.7%
|
| 9999 | Missing | 0 |
0%
|
| Sysmiss | 1393 |