| Value | Category | Cases | |
|---|---|---|---|
| 1958 | 1 |
0.1%
|
|
| 1975 | 4 |
0.3%
|
|
| 1976 | 2 |
0.2%
|
|
| 1977 | 6 |
0.5%
|
|
| 1978 | 12 |
1%
|
|
| 1979 | 13 |
1%
|
|
| 1980 | 13 |
1%
|
|
| 1981 | 20 |
1.6%
|
|
| 1982 | 25 |
2%
|
|
| 1983 | 15 |
1.2%
|
|
| 1984 | 31 |
2.5%
|
|
| 1985 | 32 |
2.6%
|
|
| 1986 | 37 |
3%
|
|
| 1987 | 28 |
2.2%
|
|
| 1988 | 40 |
3.2%
|
|
| 1989 | 39 |
3.1%
|
|
| 1990 | 48 |
3.8%
|
|
| 1991 | 46 |
3.7%
|
|
| 1992 | 45 |
3.6%
|
|
| 1993 | 37 |
3%
|
|
| 1994 | 35 |
2.8%
|
|
| 1995 | 33 |
2.6%
|
|
| 1996 | 45 |
3.6%
|
|
| 1997 | 44 |
3.5%
|
|
| 1998 | 37 |
3%
|
|
| 1999 | 38 |
3%
|
|
| 2000 | 45 |
3.6%
|
|
| 2001 | 34 |
2.7%
|
|
| 2002 | 47 |
3.8%
|
|
| 2003 | 56 |
4.5%
|
|
| 2004 | 32 |
2.6%
|
|
| 2005 | 45 |
3.6%
|
|
| 2006 | 39 |
3.1%
|
|
| 2007 | 37 |
3%
|
|
| 2008 | 33 |
2.6%
|
|
| 2009 | 39 |
3.1%
|
|
| 2010 | 31 |
2.5%
|
|
| 2011 | 28 |
2.2%
|
|
| 2012 | 30 |
2.4%
|
|
| 2013 | 26 |
2.1%
|
|
| 2014 | 5 |
0.4%
|
|
| 9998 | don't know | 0 |
0%
|
| Sysmiss | 15177 |