| Value | Category | Cases | |
|---|---|---|---|
| 1995 | 1 |
0.7%
|
|
| 1998 | 3 |
2.1%
|
|
| 1999 | 1 |
0.7%
|
|
| 2000 | 7 |
4.9%
|
|
| 2001 | 6 |
4.2%
|
|
| 2002 | 4 |
2.8%
|
|
| 2003 | 8 |
5.6%
|
|
| 2004 | 9 |
6.3%
|
|
| 2005 | 5 |
3.5%
|
|
| 2006 | 10 |
7%
|
|
| 2007 | 6 |
4.2%
|
|
| 2008 | 11 |
7.7%
|
|
| 2009 | 8 |
5.6%
|
|
| 2010 | 3 |
2.1%
|
|
| 2011 | 2 |
1.4%
|
|
| 2222 | Not asked in Phase 2 | 0 |
0%
|
| 3333 | Missing | 1 |
0.7%
|
| 5555 | Not Applicable | 0 |
0%
|
| 8888 | Refused | 0 |
0%
|
| 9999 | Don't know | 58 |
40.6%
|
| Sysmiss | 11150 |