| Value | Category | Cases | |
|---|---|---|---|
| 1981 | 2 |
0%
|
|
| 1983 | 7 |
0%
|
|
| 1984 | 6 |
0%
|
|
| 1985 | 6 |
0%
|
|
| 1986 | 5 |
0%
|
|
| 1987 | 4 |
0%
|
|
| 1988 | 14 |
0%
|
|
| 1989 | 20 |
0.1%
|
|
| 1990 | 31 |
0.1%
|
|
| 1991 | 29 |
0.1%
|
|
| 1992 | 50 |
0.2%
|
|
| 1993 | 59 |
0.2%
|
|
| 1994 | 69 |
0.2%
|
|
| 1995 | 102 |
0.3%
|
|
| 1996 | 130 |
0.4%
|
|
| 1997 | 127 |
0.4%
|
|
| 1998 | 175 |
0.6%
|
|
| 1999 | 178 |
0.6%
|
|
| 2000 | 229 |
0.8%
|
|
| 2001 | 270 |
0.9%
|
|
| 2002 | 308 |
1%
|
|
| 2003 | 334 |
1.1%
|
|
| 2004 | 356 |
1.2%
|
|
| 2005 | 465 |
1.6%
|
|
| 2006 | 541 |
1.8%
|
|
| 2007 | 624 |
2.1%
|
|
| 2008 | 683 |
2.3%
|
|
| 2009 | 871 |
2.9%
|
|
| 2010 | 1218 |
4.1%
|
|
| 2011 | 1752 |
5.9%
|
|
| 2012 | 2517 |
8.4%
|
|
| 2013 | 3650 |
12.2%
|
|
| 2014 | 1041 |
3.5%
|
|
| 9997 | Inconsistent | 2 |
0%
|
| 9999 | Missing | 22 |
0.1%
|
| Sysmiss | 14001 |
46.8%
|