| Value | Category | Cases | |
|---|---|---|---|
| 1999 | 3 |
1.9%
|
|
| 2000 | 6 |
3.7%
|
|
| 2001 | 11 |
6.8%
|
|
| 2002 | 6 |
3.7%
|
|
| 2003 | 15 |
9.3%
|
|
| 2004 | 10 |
6.2%
|
|
| 2005 | 6 |
3.7%
|
|
| 2006 | 5 |
3.1%
|
|
| 2007 | 8 |
5%
|
|
| 2008 | 10 |
6.2%
|
|
| 2009 | 9 |
5.6%
|
|
| 2010 | 3 |
1.9%
|
|
| 2011 | 6 |
3.7%
|
|
| 2012 | 3 |
1.9%
|
|
| 3333 | Missing | 0 |
0%
|
| 5555 | Not Applicable | 0 |
0%
|
| 8888 | Refused | 0 |
0%
|
| 9999 | Don't know | 60 |
37.3%
|
| Sysmiss | 12055 |