| Value | Category | Cases | |
|---|---|---|---|
| 1978 | 1 |
0.1%
|
|
| 1979 | 1 |
0.1%
|
|
| 1980 | 3 |
0.2%
|
|
| 1981 | 2 |
0.1%
|
|
| 1982 | 10 |
0.5%
|
|
| 1983 | 9 |
0.5%
|
|
| 1984 | 17 |
0.9%
|
|
| 1985 | 26 |
1.4%
|
|
| 1986 | 29 |
1.5%
|
|
| 1987 | 31 |
1.6%
|
|
| 1988 | 29 |
1.5%
|
|
| 1989 | 44 |
2.3%
|
|
| 1990 | 45 |
2.4%
|
|
| 1991 | 61 |
3.2%
|
|
| 1992 | 40 |
2.1%
|
|
| 1993 | 39 |
2%
|
|
| 1994 | 34 |
1.8%
|
|
| 1995 | 30 |
1.6%
|
|
| 1996 | 55 |
2.9%
|
|
| 1997 | 52 |
2.7%
|
|
| 1998 | 43 |
2.3%
|
|
| 1999 | 54 |
2.8%
|
|
| 2000 | 59 |
3.1%
|
|
| 2001 | 18 |
0.9%
|
|
| 2002 | 40 |
2.1%
|
|
| 2003 | 37 |
1.9%
|
|
| 2004 | 39 |
2%
|
|
| 2005 | 50 |
2.6%
|
|
| 2006 | 55 |
2.9%
|
|
| 2007 | 65 |
3.4%
|
|
| 2008 | 58 |
3%
|
|
| 2009 | 55 |
2.9%
|
|
| 2010 | 36 |
1.9%
|
|
| 2011 | 40 |
2.1%
|
|
| 2012 | 7 |
0.4%
|
|
| 9998 | DK | 43 |
2.3%
|
| Sysmiss | 652 |
34.2%
|