| Value | Category | Cases | |
|---|---|---|---|
| 1992 | 1 |
0.1%
|
|
| 1996 | 1 |
0.1%
|
|
| 1997 | 4 |
0.3%
|
|
| 1998 | 4 |
0.3%
|
|
| 1999 | 3 |
0.2%
|
|
| 2000 | 6 |
0.4%
|
|
| 2001 | 4 |
0.3%
|
|
| 2002 | 10 |
0.7%
|
|
| 2003 | 11 |
0.8%
|
|
| 2004 | 10 |
0.7%
|
|
| 2005 | 8 |
0.6%
|
|
| 2006 | 10 |
0.7%
|
|
| 2007 | 14 |
1%
|
|
| 2008 | 11 |
0.8%
|
|
| 2009 | 22 |
1.5%
|
|
| 2010 | 25 |
1.7%
|
|
| 2011 | 24 |
1.7%
|
|
| 2012 | 26 |
1.8%
|
|
| 2013 | 28 |
1.9%
|
|
| 2014 | 33 |
2.3%
|
|
| 2015 | 40 |
2.8%
|
|
| 2016 | 51 |
3.5%
|
|
| 2017 | 67 |
4.6%
|
|
| 2018 | 67 |
4.6%
|
|
| 2019 | 76 |
5.2%
|
|
| 9999 | NO RESPONSE | 4 |
0.3%
|
| Sysmiss | 893 |
61.5%
|