| Value | Category | Cases | |
|---|---|---|---|
| 1992 | 1 |
0.1%
|
|
| 1995 | 1 |
0.1%
|
|
| 1996 | 1 |
0.1%
|
|
| 1997 | 3 |
0.3%
|
|
| 1998 | 3 |
0.3%
|
|
| 1999 | 8 |
0.8%
|
|
| 2000 | 7 |
0.7%
|
|
| 2001 | 6 |
0.6%
|
|
| 2002 | 5 |
0.5%
|
|
| 2003 | 9 |
0.9%
|
|
| 2004 | 10 |
1%
|
|
| 2005 | 10 |
1%
|
|
| 2006 | 10 |
1%
|
|
| 2007 | 14 |
1.3%
|
|
| 2008 | 18 |
1.7%
|
|
| 2009 | 17 |
1.6%
|
|
| 2010 | 17 |
1.6%
|
|
| 2011 | 21 |
2%
|
|
| 2012 | 19 |
1.8%
|
|
| 2013 | 28 |
2.7%
|
|
| 2014 | 38 |
3.6%
|
|
| 2015 | 48 |
4.6%
|
|
| 2016 | 59 |
5.6%
|
|
| 2017 | 103 |
9.8%
|
|
| 2018 | 96 |
9.2%
|
|
| 9997 | 1 |
0.1%
|
|
| 9998 | DK | 3 |
0.3%
|
| Sysmiss | 492 |
46.9%
|