| Value | Category | Cases | |
|---|---|---|---|
| 1971 | 1 |
0%
|
|
| 1973 | 2 |
0%
|
|
| 1974 | 4 |
0.1%
|
|
| 1975 | 3 |
0%
|
|
| 1976 | 5 |
0.1%
|
|
| 1977 | 7 |
0.1%
|
|
| 1978 | 19 |
0.3%
|
|
| 1979 | 18 |
0.3%
|
|
| 1980 | 33 |
0.5%
|
|
| 1981 | 28 |
0.4%
|
|
| 1982 | 33 |
0.5%
|
|
| 1983 | 50 |
0.8%
|
|
| 1984 | 51 |
0.8%
|
|
| 1985 | 72 |
1.1%
|
|
| 1986 | 68 |
1%
|
|
| 1987 | 80 |
1.2%
|
|
| 1988 | 82 |
1.3%
|
|
| 1989 | 70 |
1.1%
|
|
| 1990 | 106 |
1.6%
|
|
| 1991 | 92 |
1.4%
|
|
| 1992 | 114 |
1.8%
|
|
| 1993 | 127 |
2%
|
|
| 1994 | 143 |
2.2%
|
|
| 1995 | 157 |
2.4%
|
|
| 1996 | 160 |
2.5%
|
|
| 1997 | 167 |
2.6%
|
|
| 1998 | 181 |
2.8%
|
|
| 1999 | 191 |
2.9%
|
|
| 2000 | 247 |
3.8%
|
|
| 2001 | 214 |
3.3%
|
|
| 2002 | 222 |
3.4%
|
|
| 2003 | 228 |
3.5%
|
|
| 2004 | 210 |
3.2%
|
|
| 2005 | 250 |
3.8%
|
|
| 2006 | 284 |
4.4%
|
|
| 2007 | 302 |
4.6%
|
|
| 2008 | 286 |
4.4%
|
|
| 2009 | 270 |
4.2%
|
|
| 2010 | 329 |
5.1%
|
|
| 2011 | 302 |
4.6%
|
|
| 2012 | 324 |
5%
|
|
| 2013 | 302 |
4.6%
|
|
| 2014 | 343 |
5.3%
|
|
| 2015 | 180 |
2.8%
|
|
| 2016 | 6 |
0.1%
|
|
| 9998 | don't know | 138 |
2.1%
|
| Sysmiss | 29282 |