| Value | Category | Cases | |
|---|---|---|---|
| 1981 | 1 |
0.8%
|
|
| 1982 | 2 |
1.5%
|
|
| 1983 | 1 |
0.8%
|
|
| 1984 | 1 |
0.8%
|
|
| 1985 | 2 |
1.5%
|
|
| 1986 | 2 |
1.5%
|
|
| 1987 | 1 |
0.8%
|
|
| 1988 | 6 |
4.5%
|
|
| 1989 | 5 |
3.8%
|
|
| 1990 | 8 |
6.1%
|
|
| 1991 | 5 |
3.8%
|
|
| 1992 | 9 |
6.8%
|
|
| 1993 | 1 |
0.8%
|
|
| 1994 | 3 |
2.3%
|
|
| 1995 | 2 |
1.5%
|
|
| 1997 | 2 |
1.5%
|
|
| 1999 | 2 |
1.5%
|
|
| 2000 | 3 |
2.3%
|
|
| 2001 | 5 |
3.8%
|
|
| 2002 | 9 |
6.8%
|
|
| 2003 | 6 |
4.5%
|
|
| 2004 | 7 |
5.3%
|
|
| 2005 | 7 |
5.3%
|
|
| 2006 | 17 |
12.9%
|
|
| 2007 | 17 |
12.9%
|
|
| 2008 | 8 |
6.1%
|
|
| 9998 | dk | 0 |
0%
|
| Sysmiss | 51176 |