| Value | Category | Cases | |
|---|---|---|---|
| 1995 | 1 |
0.7%
|
|
| 1997 | 1 |
0.7%
|
|
| 1998 | 2 |
1.4%
|
|
| 2000 | 2 |
1.4%
|
|
| 2001 | 2 |
1.4%
|
|
| 2002 | 3 |
2.1%
|
|
| 2003 | 3 |
2.1%
|
|
| 2004 | 4 |
2.9%
|
|
| 2005 | 4 |
2.9%
|
|
| 2006 | 5 |
3.6%
|
|
| 2007 | 8 |
5.7%
|
|
| 2008 | 6 |
4.3%
|
|
| 2009 | 18 |
12.9%
|
|
| 2010 | 63 |
45%
|
|
| 2011 | 6 |
4.3%
|
|
| 2222 | Not asked in Phase 2 | 0 |
0%
|
| 3333 | Missing | 0 |
0%
|
| 5555 | Not Applicable | 0 |
0%
|
| 8888 | Refused | 0 |
0%
|
| 9999 | Don't know | 12 |
8.6%
|
| Sysmiss | 11153 |