| Value | Category | Cases | |
|---|---|---|---|
| 1980 | 9 |
0%
|
|
| 1981 | 21 |
0.1%
|
|
| 1982 | 75 |
0.3%
|
|
| 1983 | 50 |
0.2%
|
|
| 1984 | 104 |
0.4%
|
|
| 1985 | 156 |
0.6%
|
|
| 1986 | 313 |
1.1%
|
|
| 1987 | 302 |
1.1%
|
|
| 1988 | 336 |
1.2%
|
|
| 1989 | 407 |
1.5%
|
|
| 1990 | 493 |
1.8%
|
|
| 1991 | 484 |
1.7%
|
|
| 1992 | 625 |
2.2%
|
|
| 1993 | 628 |
2.3%
|
|
| 1994 | 643 |
2.3%
|
|
| 1995 | 797 |
2.9%
|
|
| 1996 | 841 |
3%
|
|
| 1997 | 915 |
3.3%
|
|
| 1998 | 1119 |
4%
|
|
| 1999 | 1023 |
3.7%
|
|
| 2000 | 1255 |
4.5%
|
|
| 2001 | 894 |
3.2%
|
|
| 2002 | 1134 |
4.1%
|
|
| 2003 | 1023 |
3.7%
|
|
| 2004 | 978 |
3.5%
|
|
| 2005 | 1265 |
4.5%
|
|
| 2006 | 1186 |
4.3%
|
|
| 2007 | 1128 |
4.1%
|
|
| 2008 | 1205 |
4.3%
|
|
| 2009 | 1232 |
4.4%
|
|
| 2010 | 1363 |
4.9%
|
|
| 2011 | 1106 |
4%
|
|
| 2012 | 1027 |
3.7%
|
|
| 2013 | 1104 |
4%
|
|
| 2014 | 1276 |
4.6%
|
|
| 2015 | 832 |
3%
|
|
| 2016 | 35 |
0.1%
|
|
| 9998 | don't know | 426 |
1.5%
|
| Sysmiss | 34783 |