| Value | Category | Cases | |
|---|---|---|---|
| 1986 | 1 |
0.1%
|
|
| 1987 | 2 |
0.2%
|
|
| 1988 | 14 |
1.1%
|
|
| 1989 | 28 |
2.3%
|
|
| 1990 | 29 |
2.4%
|
|
| 1991 | 39 |
3.2%
|
|
| 1992 | 41 |
3.4%
|
|
| 1993 | 53 |
4.3%
|
|
| 1994 | 55 |
4.5%
|
|
| 1995 | 59 |
4.8%
|
|
| 1996 | 55 |
4.5%
|
|
| 1997 | 55 |
4.5%
|
|
| 1998 | 49 |
4%
|
|
| 1999 | 59 |
4.8%
|
|
| 2000 | 46 |
3.8%
|
|
| 2001 | 65 |
5.3%
|
|
| 2002 | 60 |
4.9%
|
|
| 2003 | 70 |
5.7%
|
|
| 2004 | 60 |
4.9%
|
|
| 2005 | 92 |
7.5%
|
|
| 2006 | 82 |
6.7%
|
|
| 2007 | 78 |
6.4%
|
|
| 2008 | 60 |
4.9%
|
|
| 2009 | 3 |
0.2%
|
|
| 9997 | na | 0 |
0%
|
| 9998 | dk | 65 |
5.3%
|
| 9999 | missing | 0 |
0%
|
| Sysmiss | 50088 |