| Value | Category | Cases | |
|---|---|---|---|
| 1985 | 2 |
0%
|
|
| 1986 | 6 |
0%
|
|
| 1987 | 3 |
0%
|
|
| 1988 | 5 |
0%
|
|
| 1989 | 12 |
0%
|
|
| 1990 | 6 |
0%
|
|
| 1991 | 13 |
0.1%
|
|
| 1992 | 28 |
0.1%
|
|
| 1993 | 27 |
0.1%
|
|
| 1994 | 36 |
0.1%
|
|
| 1995 | 42 |
0.2%
|
|
| 1996 | 80 |
0.3%
|
|
| 1997 | 59 |
0.2%
|
|
| 1998 | 73 |
0.3%
|
|
| 1999 | 82 |
0.3%
|
|
| 2000 | 157 |
0.6%
|
|
| 2001 | 169 |
0.7%
|
|
| 2002 | 178 |
0.7%
|
|
| 2003 | 230 |
0.9%
|
|
| 2004 | 292 |
1.2%
|
|
| 2005 | 299 |
1.2%
|
|
| 2006 | 450 |
1.8%
|
|
| 2007 | 442 |
1.8%
|
|
| 2008 | 607 |
2.5%
|
|
| 2009 | 655 |
2.7%
|
|
| 2010 | 916 |
3.8%
|
|
| 2011 | 1072 |
4.4%
|
|
| 2012 | 1377 |
5.7%
|
|
| 2013 | 2360 |
9.7%
|
|
| 2014 | 3985 |
16.4%
|
|
| 2015 | 5438 |
22.3%
|
|
| 2016 | 5041 |
20.7%
|
|
| 2017 | 16 |
0.1%
|
|
| 9997 | Inconsistent | 2 |
0%
|
| 9999 | Missing | 182 |
0.7%
|
| Sysmiss | 11834 |