| Value | Category | Cases | |
|---|---|---|---|
| 1988 | 1 |
0%
|
|
| 1989 | 1 |
0%
|
|
| 1990 | 7 |
0.1%
|
|
| 1991 | 8 |
0.1%
|
|
| 1992 | 12 |
0.1%
|
|
| 1993 | 14 |
0.1%
|
|
| 1994 | 18 |
0.2%
|
|
| 1995 | 21 |
0.2%
|
|
| 1996 | 21 |
0.2%
|
|
| 1997 | 27 |
0.2%
|
|
| 1998 | 37 |
0.3%
|
|
| 1999 | 44 |
0.4%
|
|
| 2000 | 58 |
0.5%
|
|
| 2001 | 27 |
0.2%
|
|
| 2002 | 43 |
0.4%
|
|
| 2003 | 51 |
0.4%
|
|
| 2004 | 62 |
0.5%
|
|
| 2005 | 72 |
0.6%
|
|
| 2006 | 60 |
0.5%
|
|
| 2007 | 77 |
0.7%
|
|
| 2008 | 127 |
1.1%
|
|
| 2009 | 100 |
0.9%
|
|
| 2010 | 131 |
1.1%
|
|
| 2011 | 112 |
1%
|
|
| 2012 | 170 |
1.4%
|
|
| 2013 | 182 |
1.6%
|
|
| 2014 | 180 |
1.5%
|
|
| 2015 | 236 |
2%
|
|
| 2016 | 249 |
2.1%
|
|
| 2017 | 279 |
2.4%
|
|
| 2018 | 233 |
2%
|
|
| 9999 | NO RESPONSE | 12 |
0.1%
|
| Sysmiss | 9065 |
77.2%
|