Value | Category | Cases | |
---|---|---|---|
-9 | Don't know (spontaneous) | 46 |
7.6%
|
1873 | 1 |
0.2%
|
|
1881 | 1 |
0.2%
|
|
1930 | 3 |
0.5%
|
|
1955 | 1 |
0.2%
|
|
1958 | 1 |
0.2%
|
|
1960 | 10 |
1.7%
|
|
1961 | 1 |
0.2%
|
|
1963 | 1 |
0.2%
|
|
1965 | 1 |
0.2%
|
|
1967 | 1 |
0.2%
|
|
1968 | 1 |
0.2%
|
|
1969 | 1 |
0.2%
|
|
1970 | 5 |
0.8%
|
|
1971 | 2 |
0.3%
|
|
1974 | 2 |
0.3%
|
|
1975 | 3 |
0.5%
|
|
1976 | 1 |
0.2%
|
|
1977 | 2 |
0.3%
|
|
1979 | 1 |
0.2%
|
|
1980 | 3 |
0.5%
|
|
1981 | 1 |
0.2%
|
|
1982 | 1 |
0.2%
|
|
1983 | 2 |
0.3%
|
|
1984 | 1 |
0.2%
|
|
1985 | 2 |
0.3%
|
|
1986 | 3 |
0.5%
|
|
1987 | 1 |
0.2%
|
|
1989 | 7 |
1.2%
|
|
1990 | 23 |
3.8%
|
|
1991 | 37 |
6.1%
|
|
1992 | 25 |
4.1%
|
|
1993 | 15 |
2.5%
|
|
1994 | 18 |
3%
|
|
1995 | 28 |
4.6%
|
|
1996 | 22 |
3.6%
|
|
1997 | 17 |
2.8%
|
|
1998 | 18 |
3%
|
|
1999 | 17 |
2.8%
|
|
2000 | 32 |
5.3%
|
|
2001 | 15 |
2.5%
|
|
2002 | 6 |
1%
|
|
2003 | 32 |
5.3%
|
|
2004 | 28 |
4.6%
|
|
2005 | 23 |
3.8%
|
|
2006 | 12 |
2%
|
|
2007 | 20 |
3.3%
|
|
2008 | 15 |
2.5%
|
|
2009 | 14 |
2.3%
|
|
2010 | 14 |
2.3%
|
|
2011 | 13 |
2.1%
|
|
2012 | 16 |
2.6%
|
|
2013 | 8 |
1.3%
|
|
2014 | 12 |
2%
|
|
2015 | 5 |
0.8%
|
|
2016 | 8 |
1.3%
|
|
2017 | 3 |
0.5%
|
|
2018 | 4 |
0.7%
|
|
Sysmiss | 349 |