| Value | Category | Cases | |
|---|---|---|---|
| 1947 | 1 |
0.1%
|
|
| 1950 | 1 |
0.1%
|
|
| 1957 | 1 |
0.1%
|
|
| 1958 | 1 |
0.1%
|
|
| 1960 | 3 |
0.2%
|
|
| 1962 | 1 |
0.1%
|
|
| 1963 | 1 |
0.1%
|
|
| 1965 | 2 |
0.1%
|
|
| 1966 | 1 |
0.1%
|
|
| 1968 | 1 |
0.1%
|
|
| 1970 | 5 |
0.3%
|
|
| 1971 | 1 |
0.1%
|
|
| 1974 | 1 |
0.1%
|
|
| 1975 | 4 |
0.2%
|
|
| 1977 | 1 |
0.1%
|
|
| 1979 | 3 |
0.2%
|
|
| 1980 | 7 |
0.4%
|
|
| 1981 | 2 |
0.1%
|
|
| 1982 | 2 |
0.1%
|
|
| 1983 | 2 |
0.1%
|
|
| 1984 | 1 |
0.1%
|
|
| 1985 | 7 |
0.4%
|
|
| 1986 | 1 |
0.1%
|
|
| 1987 | 2 |
0.1%
|
|
| 1988 | 3 |
0.2%
|
|
| 1989 | 7 |
0.4%
|
|
| 1990 | 17 |
0.9%
|
|
| 1991 | 2 |
0.1%
|
|
| 1992 | 5 |
0.3%
|
|
| 1993 | 3 |
0.2%
|
|
| 1994 | 4 |
0.2%
|
|
| 1995 | 14 |
0.7%
|
|
| 1996 | 11 |
0.6%
|
|
| 1997 | 6 |
0.3%
|
|
| 1998 | 14 |
0.7%
|
|
| 1999 | 21 |
1.1%
|
|
| 2000 | 48 |
2.5%
|
|
| 2001 | 12 |
0.6%
|
|
| 2002 | 15 |
0.8%
|
|
| 2003 | 17 |
0.9%
|
|
| 2004 | 22 |
1.2%
|
|
| 2005 | 36 |
1.9%
|
|
| 2006 | 29 |
1.5%
|
|
| 2007 | 35 |
1.8%
|
|
| 2008 | 54 |
2.9%
|
|
| 2009 | 82 |
4.3%
|
|
| 2010 | 181 |
9.6%
|
|
| 2011 | 363 |
19.2%
|
|
| 2012 | 729 |
38.5%
|
|
| 3333 | Missing | 3 |
0.2%
|
| 5555 | Not Applicable | 0 |
0%
|
| 8888 | Refused | 0 |
0%
|
| 9999 | Don't know | 107 |
5.7%
|
| Sysmiss | 20574 |