| Value | Category | Cases | |
|---|---|---|---|
| 1990 | 4 |
0.3%
|
|
| 1991 | 8 |
0.5%
|
|
| 1992 | 11 |
0.7%
|
|
| 1993 | 22 |
1.4%
|
|
| 1994 | 4 |
0.3%
|
|
| 1995 | 17 |
1.1%
|
|
| 1996 | 34 |
2.2%
|
|
| 1997 | 27 |
1.7%
|
|
| 1998 | 42 |
2.7%
|
|
| 1999 | 75 |
4.9%
|
|
| 2000 | 101 |
6.5%
|
|
| 2001 | 69 |
4.5%
|
|
| 2002 | 8 |
0.5%
|
|
| 2003 | 28 |
1.8%
|
|
| 2004 | 46 |
3%
|
|
| 2005 | 78 |
5.1%
|
|
| 2006 | 58 |
3.8%
|
|
| 2007 | 60 |
3.9%
|
|
| 2008 | 64 |
4.1%
|
|
| 2009 | 72 |
4.7%
|
|
| 2010 | 129 |
8.4%
|
|
| 2011 | 119 |
7.7%
|
|
| 2012 | 131 |
8.5%
|
|
| 2013 | 127 |
8.2%
|
|
| 2014 | 134 |
8.7%
|
|
| 2015 | 61 |
4%
|
|
| 2016 | 4 |
0.3%
|
|
| 9998 | don't know | 11 |
0.7%
|
| Sysmiss | 61049 |