Value | Category | Cases | |
---|---|---|---|
-2 | don't know | 38 |
34.9%
|
1970 | 2 |
1.8%
|
|
1974 | 1 |
0.9%
|
|
1980 | 3 |
2.8%
|
|
1984 | 1 |
0.9%
|
|
1985 | 8 |
7.3%
|
|
1986 | 4 |
3.7%
|
|
1987 | 3 |
2.8%
|
|
1988 | 1 |
0.9%
|
|
1989 | 6 |
5.5%
|
|
1990 | 9 |
8.3%
|
|
1991 | 4 |
3.7%
|
|
1993 | 1 |
0.9%
|
|
1994 | 1 |
0.9%
|
|
1995 | 1 |
0.9%
|
|
1996 | 3 |
2.8%
|
|
1997 | 1 |
0.9%
|
|
1998 | 1 |
0.9%
|
|
1999 | 1 |
0.9%
|
|
2000 | 4 |
3.7%
|
|
2002 | 1 |
0.9%
|
|
2003 | 1 |
0.9%
|
|
2006 | 4 |
3.7%
|
|
2007 | 2 |
1.8%
|
|
2008 | 4 |
3.7%
|
|
2009 | 4 |
3.7%
|
|
Sysmiss | 940 |