| Value | Category | Cases | |
|---|---|---|---|
| 1989 | 1 |
0.1%
|
|
| 1990 | 1 |
0.1%
|
|
| 1992 | 3 |
0.2%
|
|
| 1993 | 1 |
0.1%
|
|
| 1995 | 3 |
0.2%
|
|
| 1996 | 3 |
0.2%
|
|
| 1997 | 8 |
0.5%
|
|
| 1998 | 2 |
0.1%
|
|
| 1999 | 10 |
0.6%
|
|
| 2000 | 16 |
0.9%
|
|
| 2001 | 13 |
0.8%
|
|
| 2002 | 17 |
1%
|
|
| 2003 | 21 |
1.2%
|
|
| 2004 | 13 |
0.8%
|
|
| 2005 | 21 |
1.2%
|
|
| 2006 | 25 |
1.5%
|
|
| 2007 | 18 |
1%
|
|
| 2008 | 34 |
2%
|
|
| 2009 | 29 |
1.7%
|
|
| 2010 | 35 |
2%
|
|
| 2011 | 34 |
2%
|
|
| 2012 | 40 |
2.3%
|
|
| 2013 | 39 |
2.3%
|
|
| 2014 | 52 |
3%
|
|
| 2015 | 58 |
3.4%
|
|
| 2016 | 77 |
4.5%
|
|
| 2017 | 101 |
5.9%
|
|
| 2018 | 140 |
8.1%
|
|
| 2019 | 139 |
8.1%
|
|
| 2020 | 7 |
0.4%
|
|
| 9999 | NO RESPONSE | 3 |
0.2%
|
| Sysmiss | 757 |
44%
|