| Value | Category | Cases | |
|---|---|---|---|
| 1981 | 2 |
0%
|
|
| 1982 | 6 |
0.1%
|
|
| 1983 | 5 |
0.1%
|
|
| 1984 | 9 |
0.1%
|
|
| 1985 | 18 |
0.2%
|
|
| 1986 | 25 |
0.3%
|
|
| 1987 | 40 |
0.5%
|
|
| 1988 | 68 |
0.8%
|
|
| 1989 | 55 |
0.6%
|
|
| 1990 | 103 |
1.2%
|
|
| 1991 | 79 |
0.9%
|
|
| 1992 | 75 |
0.9%
|
|
| 1993 | 89 |
1%
|
|
| 1994 | 84 |
1%
|
|
| 1995 | 101 |
1.2%
|
|
| 1996 | 101 |
1.2%
|
|
| 1997 | 101 |
1.2%
|
|
| 1998 | 121 |
1.4%
|
|
| 1999 | 116 |
1.4%
|
|
| 2000 | 138 |
1.6%
|
|
| 2001 | 130 |
1.5%
|
|
| 2002 | 119 |
1.4%
|
|
| 2003 | 136 |
1.6%
|
|
| 2004 | 150 |
1.8%
|
|
| 2005 | 146 |
1.7%
|
|
| 2006 | 147 |
1.7%
|
|
| 2007 | 162 |
1.9%
|
|
| 2008 | 147 |
1.7%
|
|
| 2009 | 150 |
1.8%
|
|
| 2010 | 196 |
2.3%
|
|
| 2011 | 150 |
1.8%
|
|
| 2012 | 163 |
1.9%
|
|
| 2013 | 182 |
2.1%
|
|
| 2014 | 198 |
2.3%
|
|
| 2015 | 209 |
2.5%
|
|
| 2016 | 204 |
2.4%
|
|
| 2017 | 218 |
2.6%
|
|
| 2018 | 128 |
1.5%
|
|
| 9998 | DK | 17 |
0.2%
|
| Sysmiss | 4233 |
49.7%
|