| Value | Category | Cases | |
|---|---|---|---|
| 1984 | 1 |
0.1%
|
|
| 1986 | 3 |
0.2%
|
|
| 1987 | 2 |
0.1%
|
|
| 1988 | 9 |
0.5%
|
|
| 1989 | 11 |
0.6%
|
|
| 1990 | 14 |
0.8%
|
|
| 1991 | 16 |
0.9%
|
|
| 1992 | 26 |
1.5%
|
|
| 1993 | 23 |
1.3%
|
|
| 1994 | 25 |
1.5%
|
|
| 1995 | 29 |
1.7%
|
|
| 1996 | 26 |
1.5%
|
|
| 1997 | 28 |
1.6%
|
|
| 1998 | 27 |
1.6%
|
|
| 1999 | 37 |
2.1%
|
|
| 2000 | 31 |
1.8%
|
|
| 2001 | 41 |
2.4%
|
|
| 2002 | 42 |
2.4%
|
|
| 2003 | 26 |
1.5%
|
|
| 2004 | 28 |
1.6%
|
|
| 2005 | 28 |
1.6%
|
|
| 2006 | 25 |
1.5%
|
|
| 2007 | 31 |
1.8%
|
|
| 2008 | 29 |
1.7%
|
|
| 2009 | 32 |
1.9%
|
|
| 2010 | 45 |
2.6%
|
|
| 2011 | 39 |
2.3%
|
|
| 2012 | 40 |
2.3%
|
|
| 2013 | 37 |
2.1%
|
|
| 2014 | 36 |
2.1%
|
|
| 2015 | 42 |
2.4%
|
|
| 2016 | 32 |
1.9%
|
|
| 2017 | 32 |
1.9%
|
|
| 2018 | 39 |
2.3%
|
|
| 2019 | 28 |
1.6%
|
|
| 2020 | 1 |
0.1%
|
|
| 9999 | NO RESPONSE | 3 |
0.2%
|
| Sysmiss | 757 |
44%
|