| Value | Category | Cases | |
|---|---|---|---|
| 1989 | 10 |
0.6%
|
|
| 1991 | 5 |
0.3%
|
|
| 1992 | 7 |
0.4%
|
|
| 1993 | 31 |
1.8%
|
|
| 1994 | 29 |
1.6%
|
|
| 1995 | 23 |
1.3%
|
|
| 1996 | 37 |
2.1%
|
|
| 1997 | 15 |
0.8%
|
|
| 1998 | 41 |
2.3%
|
|
| 1999 | 23 |
1.3%
|
|
| 2000 | 55 |
3.1%
|
|
| 2001 | 37 |
2.1%
|
|
| 2002 | 17 |
1%
|
|
| 2003 | 36 |
2%
|
|
| 2004 | 55 |
3.1%
|
|
| 2005 | 72 |
4.1%
|
|
| 2006 | 86 |
4.9%
|
|
| 2007 | 39 |
2.2%
|
|
| 2008 | 97 |
5.5%
|
|
| 2009 | 89 |
5%
|
|
| 2010 | 76 |
4.3%
|
|
| 2011 | 84 |
4.7%
|
|
| 2012 | 127 |
7.2%
|
|
| 2013 | 173 |
9.8%
|
|
| 2014 | 251 |
14.2%
|
|
| 2015 | 220 |
12.4%
|
|
| 2016 | 8 |
0.5%
|
|
| 9998 | don't know | 28 |
1.6%
|
| Sysmiss | 60822 |