| Value | Category | Cases | |
|---|---|---|---|
| 0 | 1 |
0%
|
|
| 1960 | 9 |
0.4%
|
|
| 1965 | 6 |
0.3%
|
|
| 1968 | 11 |
0.5%
|
|
| 1969 | 1 |
0%
|
|
| 1970 | 31 |
1.4%
|
|
| 1972 | 5 |
0.2%
|
|
| 1973 | 7 |
0.3%
|
|
| 1975 | 10 |
0.4%
|
|
| 1976 | 9 |
0.4%
|
|
| 1977 | 12 |
0.5%
|
|
| 1978 | 14 |
0.6%
|
|
| 1979 | 2 |
0.1%
|
|
| 1980 | 51 |
2.2%
|
|
| 1981 | 7 |
0.3%
|
|
| 1982 | 11 |
0.5%
|
|
| 1983 | 3 |
0.1%
|
|
| 1984 | 4 |
0.2%
|
|
| 1985 | 42 |
1.8%
|
|
| 1986 | 19 |
0.8%
|
|
| 1987 | 13 |
0.6%
|
|
| 1988 | 23 |
1%
|
|
| 1989 | 27 |
1.2%
|
|
| 1990 | 34 |
1.5%
|
|
| 1991 | 5 |
0.2%
|
|
| 1992 | 12 |
0.5%
|
|
| 1993 | 6 |
0.3%
|
|
| 1994 | 8 |
0.4%
|
|
| 1995 | 23 |
1%
|
|
| 1996 | 31 |
1.4%
|
|
| 1997 | 27 |
1.2%
|
|
| 1998 | 70 |
3.1%
|
|
| 1999 | 66 |
2.9%
|
|
| 2000 | 166 |
7.3%
|
|
| 2001 | 56 |
2.5%
|
|
| 2002 | 54 |
2.4%
|
|
| 2003 | 53 |
2.3%
|
|
| 2004 | 40 |
1.8%
|
|
| 2005 | 69 |
3%
|
|
| 2006 | 44 |
1.9%
|
|
| 2007 | 73 |
3.2%
|
|
| 2008 | 76 |
3.3%
|
|
| 2009 | 74 |
3.3%
|
|
| 2010 | 108 |
4.7%
|
|
| 2011 | 63 |
2.8%
|
|
| 2012 | 104 |
4.6%
|
|
| 2013 | 91 |
4%
|
|
| 2014 | 132 |
5.8%
|
|
| 2015 | 156 |
6.9%
|
|
| 2016 | 134 |
5.9%
|
|
| 2017 | 182 |
8%
|
|
| Sysmiss | 3083 |