| Value | Category | Cases | |
|---|---|---|---|
| 1978 | 2 |
0.9%
|
|
| 1980 | 1 |
0.5%
|
|
| 1982 | 1 |
0.5%
|
|
| 1983 | 3 |
1.4%
|
|
| 1984 | 1 |
0.5%
|
|
| 1985 | 1 |
0.5%
|
|
| 1986 | 2 |
0.9%
|
|
| 1987 | 3 |
1.4%
|
|
| 1988 | 4 |
1.9%
|
|
| 1989 | 4 |
1.9%
|
|
| 1990 | 5 |
2.4%
|
|
| 1991 | 3 |
1.4%
|
|
| 1992 | 5 |
2.4%
|
|
| 1993 | 6 |
2.8%
|
|
| 1994 | 5 |
2.4%
|
|
| 1995 | 13 |
6.2%
|
|
| 1996 | 5 |
2.4%
|
|
| 1997 | 5 |
2.4%
|
|
| 1998 | 5 |
2.4%
|
|
| 1999 | 7 |
3.3%
|
|
| 2000 | 10 |
4.7%
|
|
| 2001 | 8 |
3.8%
|
|
| 2002 | 8 |
3.8%
|
|
| 2003 | 8 |
3.8%
|
|
| 2004 | 10 |
4.7%
|
|
| 2005 | 8 |
3.8%
|
|
| 2006 | 11 |
5.2%
|
|
| 2007 | 19 |
9%
|
|
| 2008 | 17 |
8.1%
|
|
| 2009 | 15 |
7.1%
|
|
| 9995 | Missing | 0 |
0%
|
| 9997 | Refusal | 1 |
0.5%
|
| 9998 | Dont Know | 15 |
7.1%
|
