| Value | Category | Cases | |
|---|---|---|---|
| 1979 | 2 |
0%
|
|
| 1980 | 3 |
0%
|
|
| 1981 | 3 |
0%
|
|
| 1982 | 20 |
0.1%
|
|
| 1983 | 30 |
0.1%
|
|
| 1984 | 48 |
0.1%
|
|
| 1985 | 73 |
0.2%
|
|
| 1986 | 128 |
0.3%
|
|
| 1987 | 151 |
0.4%
|
|
| 1988 | 238 |
0.6%
|
|
| 1989 | 250 |
0.7%
|
|
| 1990 | 332 |
0.9%
|
|
| 1991 | 375 |
1%
|
|
| 1992 | 417 |
1.1%
|
|
| 1993 | 406 |
1.1%
|
|
| 1994 | 489 |
1.3%
|
|
| 1995 | 449 |
1.2%
|
|
| 1996 | 572 |
1.5%
|
|
| 1997 | 580 |
1.5%
|
|
| 1998 | 679 |
1.8%
|
|
| 1999 | 680 |
1.8%
|
|
| 2000 | 709 |
1.9%
|
|
| 2001 | 748 |
2%
|
|
| 2002 | 862 |
2.3%
|
|
| 2003 | 784 |
2.1%
|
|
| 2004 | 819 |
2.2%
|
|
| 2005 | 796 |
2.1%
|
|
| 2006 | 887 |
2.4%
|
|
| 2007 | 828 |
2.2%
|
|
| 2008 | 1037 |
2.8%
|
|
| 2009 | 976 |
2.6%
|
|
| 2010 | 1055 |
2.8%
|
|
| 2011 | 1016 |
2.7%
|
|
| 2012 | 1007 |
2.7%
|
|
| 2013 | 1007 |
2.7%
|
|
| 2014 | 980 |
2.6%
|
|
| 2015 | 952 |
2.5%
|
|
| 2016 | 1120 |
3%
|
|
| 2017 | 207 |
0.5%
|
|
| 9997 | Inconsistent | 84 |
0.2%
|
| 9998 | DK | 175 |
0.5%
|
| 9999 | Missing | 3 |
0%
|
| Sysmiss | 15692 |
41.7%
|