| Value | Category | Cases | |
|---|---|---|---|
| 1983 | 1 |
0%
|
|
| 1985 | 1 |
0%
|
|
| 1986 | 3 |
0%
|
|
| 1987 | 2 |
0%
|
|
| 1988 | 11 |
0%
|
|
| 1989 | 4 |
0%
|
|
| 1990 | 6 |
0%
|
|
| 1991 | 16 |
0%
|
|
| 1992 | 25 |
0.1%
|
|
| 1993 | 22 |
0.1%
|
|
| 1994 | 36 |
0.1%
|
|
| 1995 | 36 |
0.1%
|
|
| 1996 | 49 |
0.1%
|
|
| 1997 | 66 |
0.2%
|
|
| 1998 | 102 |
0.3%
|
|
| 1999 | 114 |
0.3%
|
|
| 2000 | 186 |
0.5%
|
|
| 2001 | 184 |
0.5%
|
|
| 2002 | 246 |
0.7%
|
|
| 2003 | 307 |
0.8%
|
|
| 2004 | 374 |
1%
|
|
| 2005 | 401 |
1.1%
|
|
| 2006 | 485 |
1.3%
|
|
| 2007 | 497 |
1.3%
|
|
| 2008 | 702 |
1.9%
|
|
| 2009 | 823 |
2.2%
|
|
| 2010 | 1062 |
2.8%
|
|
| 2011 | 1266 |
3.4%
|
|
| 2012 | 1361 |
3.6%
|
|
| 2013 | 1921 |
5.1%
|
|
| 2014 | 2706 |
7.2%
|
|
| 2015 | 3458 |
9.2%
|
|
| 2016 | 4602 |
12.2%
|
|
| 2017 | 857 |
2.3%
|
|
| 9997 | Inconsistent | 2 |
0%
|
| 9998 | DK | 5 |
0%
|
| 9999 | Missing | 38 |
0.1%
|
| Sysmiss | 15692 |
41.7%
|