| Value | Category | Cases | |
|---|---|---|---|
| 1948 | 5 |
0.1%
|
|
| 1949 | 3 |
0.1%
|
|
| 1950 | 8 |
0.2%
|
|
| 1951 | 4 |
0.1%
|
|
| 1952 | 6 |
0.1%
|
|
| 1953 | 2 |
0%
|
|
| 1954 | 7 |
0.1%
|
|
| 1955 | 5 |
0.1%
|
|
| 1956 | 10 |
0.2%
|
|
| 1957 | 13 |
0.2%
|
|
| 1958 | 12 |
0.2%
|
|
| 1959 | 15 |
0.3%
|
|
| 1960 | 26 |
0.5%
|
|
| 1961 | 15 |
0.3%
|
|
| 1962 | 24 |
0.5%
|
|
| 1963 | 27 |
0.5%
|
|
| 1964 | 34 |
0.6%
|
|
| 1965 | 39 |
0.7%
|
|
| 1966 | 43 |
0.8%
|
|
| 1967 | 36 |
0.7%
|
|
| 1968 | 61 |
1.2%
|
|
| 1969 | 55 |
1%
|
|
| 1970 | 52 |
1%
|
|
| 1971 | 53 |
1%
|
|
| 1972 | 66 |
1.2%
|
|
| 1973 | 62 |
1.2%
|
|
| 1974 | 68 |
1.3%
|
|
| 1975 | 90 |
1.7%
|
|
| 1976 | 80 |
1.5%
|
|
| 1977 | 78 |
1.5%
|
|
| 1978 | 82 |
1.5%
|
|
| 1979 | 105 |
2%
|
|
| 1980 | 104 |
2%
|
|
| 1981 | 94 |
1.8%
|
|
| 1982 | 129 |
2.4%
|
|
| 1983 | 111 |
2.1%
|
|
| 1984 | 87 |
1.6%
|
|
| 1985 | 106 |
2%
|
|
| 1986 | 119 |
2.2%
|
|
| 1987 | 113 |
2.1%
|
|
| 1988 | 113 |
2.1%
|
|
| 1989 | 105 |
2%
|
|
| 1990 | 115 |
2.2%
|
|
| 1991 | 107 |
2%
|
|
| 1992 | 90 |
1.7%
|
|
| 1993 | 106 |
2%
|
|
| 1994 | 123 |
2.3%
|
|
| 1995 | 108 |
2%
|
|
| 1996 | 137 |
2.6%
|
|
| 1997 | 125 |
2.4%
|
|
| 1998 | 133 |
2.5%
|
|
| 1999 | 117 |
2.2%
|
|
| 2000 | 140 |
2.6%
|
|
| 2001 | 120 |
2.3%
|
|
| 2002 | 113 |
2.1%
|
|
| 2003 | 134 |
2.5%
|
|
| 2004 | 150 |
2.8%
|
|
| 2005 | 142 |
2.7%
|
|
| 2006 | 126 |
2.4%
|
|
| 2007 | 168 |
3.2%
|
|
| 2008 | 81 |
1.5%
|
|
| 2009 | 54 |
1%
|
|
| 2010 | 68 |
1.3%
|
|
| 2011 | 49 |
0.9%
|
|
| 2012 | 41 |
0.8%
|
|
| 2013 | 50 |
0.9%
|
|
| 2014 | 50 |
0.9%
|
|
| 2015 | 9 |
0.2%
|
|
| 3333 | Missing | 8 |
0.2%
|
| 5555 | Not Applicable | 0 |
0%
|
| 8888 | Refused | 0 |
0%
|
| 9999 | Don't Know | 370 |
7%
|
| Sysmiss | 21518 |