Value | Category | Cases | |
---|---|---|---|
-2 | don't know | 93 |
40.4%
|
1960 | 1 |
0.4%
|
|
1970 | 2 |
0.9%
|
|
1973 | 1 |
0.4%
|
|
1975 | 3 |
1.3%
|
|
1980 | 7 |
3%
|
|
1982 | 1 |
0.4%
|
|
1983 | 3 |
1.3%
|
|
1984 | 5 |
2.2%
|
|
1985 | 13 |
5.7%
|
|
1986 | 5 |
2.2%
|
|
1987 | 8 |
3.5%
|
|
1988 | 9 |
3.9%
|
|
1989 | 4 |
1.7%
|
|
1990 | 11 |
4.8%
|
|
1991 | 4 |
1.7%
|
|
1992 | 7 |
3%
|
|
1993 | 2 |
0.9%
|
|
1995 | 5 |
2.2%
|
|
1996 | 2 |
0.9%
|
|
1997 | 1 |
0.4%
|
|
1998 | 6 |
2.6%
|
|
1999 | 1 |
0.4%
|
|
2000 | 7 |
3%
|
|
2001 | 1 |
0.4%
|
|
2002 | 4 |
1.7%
|
|
2003 | 3 |
1.3%
|
|
2005 | 1 |
0.4%
|
|
2006 | 1 |
0.4%
|
|
2007 | 3 |
1.3%
|
|
2008 | 6 |
2.6%
|
|
2009 | 10 |
4.3%
|
|
Sysmiss | 819 |