| Value | Category | Cases | |
|---|---|---|---|
| 1977 | 1 |
0%
|
|
| 1978 | 5 |
0%
|
|
| 1979 | 17 |
0.1%
|
|
| 1980 | 26 |
0.1%
|
|
| 1981 | 25 |
0.1%
|
|
| 1982 | 59 |
0.2%
|
|
| 1983 | 73 |
0.2%
|
|
| 1984 | 150 |
0.5%
|
|
| 1985 | 137 |
0.5%
|
|
| 1986 | 170 |
0.6%
|
|
| 1987 | 182 |
0.6%
|
|
| 1988 | 267 |
0.9%
|
|
| 1989 | 254 |
0.8%
|
|
| 1990 | 303 |
1%
|
|
| 1991 | 236 |
0.8%
|
|
| 1992 | 333 |
1.1%
|
|
| 1993 | 328 |
1.1%
|
|
| 1994 | 367 |
1.2%
|
|
| 1995 | 342 |
1.1%
|
|
| 1996 | 446 |
1.5%
|
|
| 1997 | 381 |
1.3%
|
|
| 1998 | 457 |
1.5%
|
|
| 1999 | 512 |
1.7%
|
|
| 2000 | 501 |
1.7%
|
|
| 2001 | 510 |
1.7%
|
|
| 2002 | 512 |
1.7%
|
|
| 2003 | 509 |
1.7%
|
|
| 2004 | 586 |
2%
|
|
| 2005 | 646 |
2.2%
|
|
| 2006 | 697 |
2.3%
|
|
| 2007 | 695 |
2.3%
|
|
| 2008 | 674 |
2.3%
|
|
| 2009 | 721 |
2.4%
|
|
| 2010 | 832 |
2.8%
|
|
| 2011 | 740 |
2.5%
|
|
| 2012 | 775 |
2.6%
|
|
| 2013 | 801 |
2.7%
|
|
| 2014 | 227 |
0.8%
|
|
| 9997 | Inconsistent | 90 |
0.3%
|
| 9998 | DK | 1284 |
4.3%
|
| 9999 | Missing | 18 |
0.1%
|
| Sysmiss | 14009 |
46.9%
|