| Value | Category | Cases | |
|---|---|---|---|
| 1981 | 4 |
0%
|
|
| 1982 | 16 |
0.1%
|
|
| 1983 | 27 |
0.1%
|
|
| 1984 | 36 |
0.2%
|
|
| 1985 | 62 |
0.3%
|
|
| 1986 | 94 |
0.5%
|
|
| 1987 | 115 |
0.6%
|
|
| 1988 | 198 |
1%
|
|
| 1989 | 235 |
1.2%
|
|
| 1990 | 307 |
1.5%
|
|
| 1991 | 310 |
1.5%
|
|
| 1992 | 307 |
1.5%
|
|
| 1993 | 455 |
2.3%
|
|
| 1994 | 483 |
2.4%
|
|
| 1995 | 503 |
2.5%
|
|
| 1996 | 574 |
2.9%
|
|
| 1997 | 612 |
3%
|
|
| 1998 | 602 |
3%
|
|
| 1999 | 740 |
3.7%
|
|
| 2000 | 897 |
4.5%
|
|
| 2001 | 750 |
3.7%
|
|
| 2002 | 812 |
4%
|
|
| 2003 | 815 |
4.1%
|
|
| 2004 | 812 |
4%
|
|
| 2005 | 909 |
4.5%
|
|
| 2006 | 869 |
4.3%
|
|
| 2007 | 1073 |
5.3%
|
|
| 2008 | 935 |
4.6%
|
|
| 2009 | 980 |
4.9%
|
|
| 2010 | 1161 |
5.8%
|
|
| 2011 | 937 |
4.7%
|
|
| 2012 | 911 |
4.5%
|
|
| 2013 | 930 |
4.6%
|
|
| 2014 | 884 |
4.4%
|
|
| 2015 | 446 |
2.2%
|
|
| 2016 | 9 |
0%
|
|
| 9998 | don't know | 306 |
1.5%
|
| Sysmiss | 42477 |