Value | Category | Cases | |
---|---|---|---|
-2 | don't know | 102 |
33.7%
|
1959 | 1 |
0.3%
|
|
1960 | 1 |
0.3%
|
|
1967 | 1 |
0.3%
|
|
1969 | 1 |
0.3%
|
|
1970 | 4 |
1.3%
|
|
1974 | 1 |
0.3%
|
|
1975 | 5 |
1.7%
|
|
1978 | 1 |
0.3%
|
|
1979 | 2 |
0.7%
|
|
1980 | 9 |
3%
|
|
1981 | 1 |
0.3%
|
|
1982 | 3 |
1%
|
|
1983 | 2 |
0.7%
|
|
1984 | 4 |
1.3%
|
|
1985 | 14 |
4.6%
|
|
1986 | 8 |
2.6%
|
|
1987 | 11 |
3.6%
|
|
1988 | 12 |
4%
|
|
1989 | 12 |
4%
|
|
1990 | 14 |
4.6%
|
|
1991 | 6 |
2%
|
|
1992 | 5 |
1.7%
|
|
1993 | 4 |
1.3%
|
|
1994 | 2 |
0.7%
|
|
1995 | 4 |
1.3%
|
|
1996 | 5 |
1.7%
|
|
1997 | 7 |
2.3%
|
|
1998 | 9 |
3%
|
|
1999 | 8 |
2.6%
|
|
2000 | 9 |
3%
|
|
2001 | 1 |
0.3%
|
|
2002 | 5 |
1.7%
|
|
2003 | 2 |
0.7%
|
|
2004 | 1 |
0.3%
|
|
2005 | 2 |
0.7%
|
|
2006 | 2 |
0.7%
|
|
2007 | 7 |
2.3%
|
|
2008 | 6 |
2%
|
|
2009 | 9 |
3%
|
|
Sysmiss | 746 |