| Value | Category | Cases | |
|---|---|---|---|
| 1970 | 2 |
1.4%
|
|
| 1976 | 1 |
0.7%
|
|
| 1982 | 1 |
0.7%
|
|
| 1985 | 1 |
0.7%
|
|
| 1986 | 1 |
0.7%
|
|
| 1989 | 1 |
0.7%
|
|
| 1992 | 1 |
0.7%
|
|
| 1993 | 1 |
0.7%
|
|
| 1994 | 1 |
0.7%
|
|
| 1996 | 2 |
1.4%
|
|
| 1997 | 4 |
2.8%
|
|
| 1998 | 1 |
0.7%
|
|
| 1999 | 2 |
1.4%
|
|
| 2000 | 6 |
4.2%
|
|
| 2001 | 7 |
4.9%
|
|
| 2002 | 3 |
2.1%
|
|
| 2003 | 3 |
2.1%
|
|
| 2004 | 4 |
2.8%
|
|
| 2005 | 7 |
4.9%
|
|
| 2006 | 7 |
4.9%
|
|
| 2007 | 11 |
7.6%
|
|
| 2008 | 15 |
10.4%
|
|
| 2009 | 19 |
13.2%
|
|
| 2010 | 19 |
13.2%
|
|
| 2222 | Not asked in Phase 2 | 0 |
0%
|
| 3333 | Missing | 9 |
6.3%
|
| 5555 | Not Applicable | 0 |
0%
|
| 8888 | Refused | 3 |
2.1%
|
| 9999 | Don't know | 12 |
8.3%
|
| Sysmiss | 21730 |