| Value | Category | Cases | |
|---|---|---|---|
| 1959 | 1 |
0.2%
|
|
| 1960 | 1 |
0.2%
|
|
| 1961 | 1 |
0.2%
|
|
| 1963 | 1 |
0.2%
|
|
| 1970 | 3 |
0.6%
|
|
| 1973 | 5 |
1%
|
|
| 1974 | 1 |
0.2%
|
|
| 1977 | 1 |
0.2%
|
|
| 1979 | 2 |
0.4%
|
|
| 1980 | 6 |
1.2%
|
|
| 1982 | 3 |
0.6%
|
|
| 1983 | 1 |
0.2%
|
|
| 1985 | 2 |
0.4%
|
|
| 1986 | 2 |
0.4%
|
|
| 1988 | 1 |
0.2%
|
|
| 1990 | 1 |
0.2%
|
|
| 1991 | 3 |
0.6%
|
|
| 1992 | 6 |
1.2%
|
|
| 1994 | 3 |
0.6%
|
|
| 1995 | 7 |
1.4%
|
|
| 1996 | 7 |
1.4%
|
|
| 1997 | 2 |
0.4%
|
|
| 1998 | 14 |
2.8%
|
|
| 1999 | 6 |
1.2%
|
|
| 2000 | 12 |
2.4%
|
|
| 2001 | 11 |
2.2%
|
|
| 2002 | 11 |
2.2%
|
|
| 2003 | 7 |
1.4%
|
|
| 2004 | 21 |
4.2%
|
|
| 2005 | 10 |
2%
|
|
| 2006 | 22 |
4.4%
|
|
| 2007 | 16 |
3.2%
|
|
| 2008 | 32 |
6.4%
|
|
| 2009 | 36 |
7.2%
|
|
| 2010 | 42 |
8.4%
|
|
| 2011 | 67 |
13.4%
|
|
| 2012 | 63 |
12.6%
|
|
| 3333 | Missing | 0 |
0%
|
| 5555 | Not Applicable | 0 |
0%
|
| 8888 | Refused | 1 |
0.2%
|
| 9999 | Don't know | 70 |
14%
|
| Sysmiss | 21956 |