Value | Category | Cases | |
---|---|---|---|
-8 | Don’t Know | 69 |
3.5%
|
1937 | 10 |
0.5%
|
|
1953 | 10 |
0.5%
|
|
1954 | 10 |
0.5%
|
|
1955 | 10 |
0.5%
|
|
1957 | 10 |
0.5%
|
|
1960 | 40 |
2%
|
|
1962 | 10 |
0.5%
|
|
1963 | 20 |
1%
|
|
1965 | 30 |
1.5%
|
|
1968 | 40 |
2%
|
|
1969 | 20 |
1%
|
|
1970 | 20 |
1%
|
|
1972 | 21 |
1.1%
|
|
1974 | 22 |
1.1%
|
|
1975 | 105 |
5.3%
|
|
1976 | 21 |
1.1%
|
|
1977 | 20 |
1%
|
|
1978 | 14 |
0.7%
|
|
1979 | 24 |
1.2%
|
|
1980 | 41 |
2.1%
|
|
1981 | 10 |
0.5%
|
|
1982 | 67 |
3.4%
|
|
1983 | 30 |
1.5%
|
|
1984 | 20 |
1%
|
|
1985 | 20 |
1%
|
|
1986 | 10 |
0.5%
|
|
1987 | 10 |
0.5%
|
|
1988 | 10 |
0.5%
|
|
1989 | 20 |
1%
|
|
1990 | 40 |
2%
|
|
1991 | 76 |
3.9%
|
|
1992 | 51 |
2.6%
|
|
1993 | 52 |
2.6%
|
|
1994 | 40 |
2%
|
|
1995 | 30 |
1.5%
|
|
1996 | 47 |
2.4%
|
|
1997 | 102 |
5.2%
|
|
1998 | 20 |
1%
|
|
1999 | 47 |
2.4%
|
|
2000 | 37 |
1.9%
|
|
2001 | 35 |
1.8%
|
|
2002 | 64 |
3.3%
|
|
2003 | 50 |
2.5%
|
|
2004 | 41 |
2.1%
|
|
2005 | 68 |
3.5%
|
|
2006 | 95 |
4.8%
|
|
2007 | 41 |
2.1%
|
|
2008 | 41 |
2.1%
|
|
2009 | 51 |
2.6%
|
|
2010 | 39 |
2%
|
|
2011 | 31 |
1.6%
|
|
2012 | 16 |
0.8%
|
|
2013 | 35 |
1.8%
|
|
2014 | 20 |
1%
|
|
2015 | 21 |
1.1%
|
|
2016 | 13 |
0.7%
|