| Value | Category | Cases | |
|---|---|---|---|
| 1988 | 1 |
0%
|
|
| 1989 | 1 |
0%
|
|
| 1990 | 1 |
0%
|
|
| 1991 | 2 |
0%
|
|
| 1992 | 6 |
0.1%
|
|
| 1993 | 5 |
0.1%
|
|
| 1994 | 20 |
0.4%
|
|
| 1995 | 20 |
0.4%
|
|
| 1996 | 14 |
0.3%
|
|
| 1997 | 24 |
0.4%
|
|
| 1998 | 19 |
0.3%
|
|
| 1999 | 32 |
0.6%
|
|
| 2000 | 50 |
0.9%
|
|
| 2001 | 26 |
0.5%
|
|
| 2002 | 55 |
1%
|
|
| 2003 | 38 |
0.7%
|
|
| 2004 | 53 |
1%
|
|
| 2005 | 44 |
0.8%
|
|
| 2006 | 63 |
1.1%
|
|
| 2007 | 64 |
1.2%
|
|
| 2008 | 110 |
2%
|
|
| 2009 | 108 |
2%
|
|
| 2010 | 103 |
1.9%
|
|
| 2011 | 152 |
2.8%
|
|
| 2012 | 173 |
3.1%
|
|
| 2013 | 203 |
3.7%
|
|
| 2014 | 281 |
5.1%
|
|
| 2015 | 326 |
5.9%
|
|
| 2016 | 354 |
6.4%
|
|
| 2017 | 364 |
6.6%
|
|
| 2018 | 371 |
6.7%
|
|
| 9999 | NO RESPONSE | 1 |
0%
|
| Sysmiss | 2429 |
44.1%
|