| Value | Category | Cases | |
|---|---|---|---|
| 1985 | 2 |
0.1%
|
|
| 1986 | 3 |
0.1%
|
|
| 1987 | 3 |
0.1%
|
|
| 1988 | 6 |
0.2%
|
|
| 1989 | 5 |
0.2%
|
|
| 1990 | 11 |
0.3%
|
|
| 1991 | 17 |
0.5%
|
|
| 1992 | 32 |
1%
|
|
| 1993 | 28 |
0.9%
|
|
| 1994 | 33 |
1%
|
|
| 1995 | 43 |
1.4%
|
|
| 1996 | 29 |
0.9%
|
|
| 1997 | 47 |
1.5%
|
|
| 1998 | 29 |
0.9%
|
|
| 1999 | 47 |
1.5%
|
|
| 2000 | 67 |
2.1%
|
|
| 2001 | 44 |
1.4%
|
|
| 2002 | 48 |
1.5%
|
|
| 2003 | 64 |
2%
|
|
| 2004 | 52 |
1.6%
|
|
| 2005 | 58 |
1.8%
|
|
| 2006 | 63 |
2%
|
|
| 2007 | 60 |
1.9%
|
|
| 2008 | 56 |
1.8%
|
|
| 2009 | 61 |
1.9%
|
|
| 2010 | 88 |
2.8%
|
|
| 2011 | 98 |
3.1%
|
|
| 2012 | 81 |
2.6%
|
|
| 2013 | 77 |
2.4%
|
|
| 2014 | 63 |
2%
|
|
| 2015 | 84 |
2.7%
|
|
| 2016 | 81 |
2.6%
|
|
| 2017 | 77 |
2.4%
|
|
| 2018 | 82 |
2.6%
|
|
| 2019 | 54 |
1.7%
|
|
| 9998 | DK | 64 |
2%
|
| 9999 | NO RESPONSE | 3 |
0.1%
|
| Sysmiss | 1397 |
44.3%
|