| Value | Category | Cases | |
|---|---|---|---|
| 1981 | 1 |
0%
|
|
| 1982 | 1 |
0%
|
|
| 1983 | 7 |
0.1%
|
|
| 1984 | 3 |
0%
|
|
| 1985 | 16 |
0.2%
|
|
| 1986 | 12 |
0.2%
|
|
| 1987 | 21 |
0.3%
|
|
| 1988 | 25 |
0.4%
|
|
| 1989 | 41 |
0.6%
|
|
| 1990 | 71 |
1.1%
|
|
| 1991 | 67 |
1%
|
|
| 1992 | 63 |
1%
|
|
| 1993 | 56 |
0.9%
|
|
| 1994 | 80 |
1.2%
|
|
| 1995 | 75 |
1.1%
|
|
| 1996 | 71 |
1.1%
|
|
| 1997 | 78 |
1.2%
|
|
| 1998 | 95 |
1.4%
|
|
| 1999 | 105 |
1.6%
|
|
| 2000 | 127 |
1.9%
|
|
| 2001 | 85 |
1.3%
|
|
| 2002 | 98 |
1.5%
|
|
| 2003 | 99 |
1.5%
|
|
| 2004 | 104 |
1.6%
|
|
| 2005 | 126 |
1.9%
|
|
| 2006 | 101 |
1.5%
|
|
| 2007 | 115 |
1.7%
|
|
| 2008 | 129 |
2%
|
|
| 2009 | 149 |
2.3%
|
|
| 2010 | 160 |
2.4%
|
|
| 2011 | 143 |
2.2%
|
|
| 2012 | 178 |
2.7%
|
|
| 2013 | 198 |
3%
|
|
| 2014 | 212 |
3.2%
|
|
| 2015 | 214 |
3.3%
|
|
| 2016 | 252 |
3.8%
|
|
| 2017 | 239 |
3.6%
|
|
| 2018 | 231 |
3.5%
|
|
| 2019 | 115 |
1.7%
|
|
| 9998 | DK | 529 |
8%
|
| 9999 | NO RESPONSE | 112 |
1.7%
|
| Sysmiss | 1972 |
30%
|