| Value | Category | Cases | |
|---|---|---|---|
| 1995 | 1 |
0.1%
|
|
| 1996 | 3 |
0.2%
|
|
| 1997 | 17 |
1%
|
|
| 1998 | 14 |
0.8%
|
|
| 1999 | 20 |
1.1%
|
|
| 2000 | 24 |
1.4%
|
|
| 2001 | 30 |
1.7%
|
|
| 2002 | 43 |
2.4%
|
|
| 2003 | 34 |
1.9%
|
|
| 2004 | 68 |
3.9%
|
|
| 2005 | 64 |
3.6%
|
|
| 2006 | 87 |
4.9%
|
|
| 2007 | 93 |
5.3%
|
|
| 2008 | 84 |
4.8%
|
|
| 2009 | 113 |
6.4%
|
|
| 2010 | 76 |
4.3%
|
|
| 2011 | 1 |
0.1%
|
|
| 2222 | Not asked in Phase 2 | 0 |
0%
|
| 3333 | Missing | 663 |
37.7%
|
| 5555 | Not Applicable | 0 |
0%
|
| 8888 | Refused | 31 |
1.8%
|
| 9999 | Don't know | 292 |
16.6%
|
| Sysmiss | 9535 |