| Value | Category | Cases | |
|---|---|---|---|
| 1979 | 4 |
0%
|
|
| 1980 | 25 |
0.1%
|
|
| 1981 | 13 |
0%
|
|
| 1982 | 59 |
0.1%
|
|
| 1983 | 72 |
0.1%
|
|
| 1984 | 89 |
0.2%
|
|
| 1985 | 178 |
0.4%
|
|
| 1986 | 202 |
0.4%
|
|
| 1987 | 300 |
0.6%
|
|
| 1988 | 434 |
0.9%
|
|
| 1989 | 390 |
0.8%
|
|
| 1990 | 722 |
1.5%
|
|
| 1991 | 568 |
1.1%
|
|
| 1992 | 844 |
1.7%
|
|
| 1993 | 738 |
1.5%
|
|
| 1994 | 829 |
1.7%
|
|
| 1995 | 1028 |
2.1%
|
|
| 1996 | 974 |
2%
|
|
| 1997 | 1266 |
2.6%
|
|
| 1998 | 1275 |
2.6%
|
|
| 1999 | 1194 |
2.4%
|
|
| 2000 | 1516 |
3.1%
|
|
| 2001 | 1252 |
2.5%
|
|
| 2002 | 1600 |
3.2%
|
|
| 2003 | 1453 |
2.9%
|
|
| 2004 | 1566 |
3.2%
|
|
| 2005 | 1836 |
3.7%
|
|
| 2006 | 1541 |
3.1%
|
|
| 2007 | 2062 |
4.2%
|
|
| 2008 | 1953 |
3.9%
|
|
| 2009 | 1986 |
4%
|
|
| 2010 | 2110 |
4.3%
|
|
| 2011 | 2146 |
4.3%
|
|
| 2012 | 2008 |
4.1%
|
|
| 2013 | 2147 |
4.3%
|
|
| 2014 | 2188 |
4.4%
|
|
| 2015 | 2229 |
4.5%
|
|
| 2016 | 2238 |
4.5%
|
|
| 2017 | 2291 |
4.6%
|
|
| 2018 | 233 |
0.5%
|
|
| 9997 | Inconsistent | 371 |
0.7%
|
| 9998 | Dk | 3513 |
7.1%
|
| 9999 | No response | 25 |
0.1%
|
| Sysmiss | 30042 |