| Value | Category | Cases | |
|---|---|---|---|
| 1980 | 1 |
0%
|
|
| 1981 | 1 |
0%
|
|
| 1984 | 2 |
0%
|
|
| 1985 | 2 |
0%
|
|
| 1986 | 1 |
0%
|
|
| 1987 | 4 |
0.1%
|
|
| 1988 | 4 |
0.1%
|
|
| 1989 | 9 |
0.2%
|
|
| 1990 | 7 |
0.2%
|
|
| 1991 | 15 |
0.3%
|
|
| 1992 | 14 |
0.3%
|
|
| 1993 | 18 |
0.4%
|
|
| 1994 | 21 |
0.5%
|
|
| 1995 | 26 |
0.6%
|
|
| 1996 | 26 |
0.6%
|
|
| 1997 | 37 |
0.8%
|
|
| 1998 | 42 |
0.9%
|
|
| 1999 | 37 |
0.8%
|
|
| 2000 | 57 |
1.3%
|
|
| 2001 | 33 |
0.7%
|
|
| 2002 | 42 |
0.9%
|
|
| 2003 | 42 |
0.9%
|
|
| 2004 | 49 |
1.1%
|
|
| 2005 | 31 |
0.7%
|
|
| 2006 | 56 |
1.2%
|
|
| 2007 | 53 |
1.2%
|
|
| 2008 | 49 |
1.1%
|
|
| 2009 | 52 |
1.2%
|
|
| 2010 | 67 |
1.5%
|
|
| 2011 | 48 |
1.1%
|
|
| 2012 | 65 |
1.4%
|
|
| 2013 | 55 |
1.2%
|
|
| 2014 | 65 |
1.4%
|
|
| 2015 | 65 |
1.4%
|
|
| 2016 | 64 |
1.4%
|
|
| 2017 | 67 |
1.5%
|
|
| 2018 | 58 |
1.3%
|
|
| 9998 | DK | 7 |
0.2%
|
| Sysmiss | 3213 |
71.3%
|