Value | Category | Cases | |
---|---|---|---|
-2 | don't know | 67 |
53.2%
|
1961 | 1 |
0.8%
|
|
1970 | 3 |
2.4%
|
|
1975 | 4 |
3.2%
|
|
1980 | 11 |
8.7%
|
|
1985 | 9 |
7.1%
|
|
1986 | 1 |
0.8%
|
|
1988 | 2 |
1.6%
|
|
1989 | 1 |
0.8%
|
|
1990 | 8 |
6.3%
|
|
1991 | 2 |
1.6%
|
|
1992 | 1 |
0.8%
|
|
1993 | 1 |
0.8%
|
|
1995 | 1 |
0.8%
|
|
1997 | 2 |
1.6%
|
|
2000 | 1 |
0.8%
|
|
2002 | 1 |
0.8%
|
|
2003 | 1 |
0.8%
|
|
2005 | 1 |
0.8%
|
|
2006 | 3 |
2.4%
|
|
2007 | 3 |
2.4%
|
|
2008 | 1 |
0.8%
|
|
2009 | 1 |
0.8%
|
|
Sysmiss | 923 |