| Value | Category | Cases | |
|---|---|---|---|
| 1979 | 2 |
0%
|
|
| 1980 | 13 |
0.1%
|
|
| 1981 | 15 |
0.1%
|
|
| 1982 | 23 |
0.1%
|
|
| 1983 | 34 |
0.2%
|
|
| 1984 | 42 |
0.2%
|
|
| 1985 | 82 |
0.4%
|
|
| 1986 | 114 |
0.5%
|
|
| 1987 | 163 |
0.8%
|
|
| 1988 | 207 |
1%
|
|
| 1989 | 285 |
1.4%
|
|
| 1990 | 365 |
1.8%
|
|
| 1991 | 279 |
1.3%
|
|
| 1992 | 355 |
1.7%
|
|
| 1993 | 424 |
2%
|
|
| 1994 | 422 |
2%
|
|
| 1995 | 451 |
2.2%
|
|
| 1996 | 411 |
2%
|
|
| 1997 | 451 |
2.2%
|
|
| 1998 | 551 |
2.6%
|
|
| 1999 | 541 |
2.6%
|
|
| 2000 | 700 |
3.4%
|
|
| 2001 | 528 |
2.5%
|
|
| 2002 | 653 |
3.1%
|
|
| 2003 | 865 |
4.2%
|
|
| 2004 | 989 |
4.7%
|
|
| 2005 | 1007 |
4.8%
|
|
| 2006 | 865 |
4.2%
|
|
| 2007 | 888 |
4.3%
|
|
| 2008 | 944 |
4.5%
|
|
| 2009 | 874 |
4.2%
|
|
| 2010 | 980 |
4.7%
|
|
| 2011 | 796 |
3.8%
|
|
| 2012 | 760 |
3.6%
|
|
| 2013 | 885 |
4.3%
|
|
| 2014 | 874 |
4.2%
|
|
| 2015 | 857 |
4.1%
|
|
| 2016 | 791 |
3.8%
|
|
| 2017 | 958 |
4.6%
|
|
| 2018 | 201 |
1%
|
|
| 9998 | DK | 105 |
0.5%
|
| 9999 | NO RESPONSE | 72 |
0.3%
|
| Sysmiss | 10238 |