| Value | Category | Cases | |
|---|---|---|---|
| 1974 | 2 |
0%
|
|
| 1976 | 7 |
0%
|
|
| 1977 | 16 |
0%
|
|
| 1978 | 38 |
0.1%
|
|
| 1979 | 83 |
0.1%
|
|
| 1980 | 152 |
0.2%
|
|
| 1981 | 103 |
0.2%
|
|
| 1982 | 218 |
0.4%
|
|
| 1983 | 211 |
0.3%
|
|
| 1984 | 441 |
0.7%
|
|
| 1985 | 381 |
0.6%
|
|
| 1986 | 471 |
0.8%
|
|
| 1987 | 494 |
0.8%
|
|
| 1988 | 652 |
1.1%
|
|
| 1989 | 732 |
1.2%
|
|
| 1990 | 809 |
1.3%
|
|
| 1991 | 603 |
1%
|
|
| 1992 | 911 |
1.5%
|
|
| 1993 | 709 |
1.2%
|
|
| 1994 | 1068 |
1.7%
|
|
| 1995 | 902 |
1.5%
|
|
| 1996 | 908 |
1.5%
|
|
| 1997 | 953 |
1.6%
|
|
| 1998 | 1001 |
1.6%
|
|
| 1999 | 1170 |
1.9%
|
|
| 2000 | 1385 |
2.3%
|
|
| 2001 | 1063 |
1.7%
|
|
| 2002 | 1211 |
2%
|
|
| 2003 | 1096 |
1.8%
|
|
| 2004 | 1369 |
2.2%
|
|
| 2005 | 1296 |
2.1%
|
|
| 2006 | 1338 |
2.2%
|
|
| 2007 | 1463 |
2.4%
|
|
| 2008 | 1467 |
2.4%
|
|
| 2009 | 1494 |
2.4%
|
|
| 2010 | 1527 |
2.5%
|
|
| 2011 | 1487 |
2.4%
|
|
| 2012 | 1390 |
2.3%
|
|
| 2013 | 1392 |
2.3%
|
|
| 2014 | 979 |
1.6%
|
|
| 9997 | Inconsistent | 95 |
0.2%
|
| 9998 | DK | 1544 |
2.5%
|
| 9999 | Missing | 22 |
0%
|
| Sysmiss | 26633 |
43.5%
|