| Value | Category | Cases | |
|---|---|---|---|
| 1966 | 1 |
0%
|
|
| 1968 | 3 |
0%
|
|
| 1969 | 2 |
0%
|
|
| 1970 | 9 |
0%
|
|
| 1971 | 10 |
0%
|
|
| 1972 | 17 |
0.1%
|
|
| 1973 | 22 |
0.1%
|
|
| 1974 | 44 |
0.2%
|
|
| 1975 | 88 |
0.4%
|
|
| 1976 | 109 |
0.5%
|
|
| 1977 | 128 |
0.6%
|
|
| 1978 | 200 |
1%
|
|
| 1979 | 205 |
1%
|
|
| 1980 | 346 |
1.7%
|
|
| 1981 | 282 |
1.3%
|
|
| 1982 | 339 |
1.6%
|
|
| 1983 | 307 |
1.5%
|
|
| 1984 | 360 |
1.7%
|
|
| 1985 | 552 |
2.6%
|
|
| 1986 | 400 |
1.9%
|
|
| 1987 | 448 |
2.1%
|
|
| 1988 | 436 |
2.1%
|
|
| 1989 | 482 |
2.3%
|
|
| 1990 | 673 |
3.2%
|
|
| 1991 | 479 |
2.3%
|
|
| 1992 | 548 |
2.6%
|
|
| 1993 | 547 |
2.6%
|
|
| 1994 | 476 |
2.3%
|
|
| 1995 | 681 |
3.3%
|
|
| 1996 | 483 |
2.3%
|
|
| 1997 | 576 |
2.8%
|
|
| 1998 | 642 |
3.1%
|
|
| 1999 | 552 |
2.6%
|
|
| 2000 | 769 |
3.7%
|
|
| 2001 | 521 |
2.5%
|
|
| 2002 | 602 |
2.9%
|
|
| 2003 | 523 |
2.5%
|
|
| 2004 | 547 |
2.6%
|
|
| 2005 | 675 |
3.2%
|
|
| 2006 | 583 |
2.8%
|
|
| 2007 | 600 |
2.9%
|
|
| 2008 | 686 |
3.3%
|
|
| 2009 | 619 |
3%
|
|
| 2010 | 715 |
3.4%
|
|
| 2011 | 612 |
2.9%
|
|
| 2012 | 640 |
3.1%
|
|
| 2013 | 693 |
3.3%
|
|
| 2014 | 673 |
3.2%
|
|
| 2015 | 372 |
1.8%
|
|
| 2016 | 10 |
0%
|
|
| 9998 | don't know | 640 |
3.1%
|
| Sysmiss | 14856 |