| Value | Category | Cases | |
|---|---|---|---|
| 1989 | 4 |
0%
|
|
| 1990 | 15 |
0.2%
|
|
| 1991 | 61 |
0.7%
|
|
| 1992 | 156 |
1.8%
|
|
| 1993 | 334 |
3.9%
|
|
| 1994 | 523 |
6.1%
|
|
| 1995 | 658 |
7.7%
|
|
| 1996 | 747 |
8.7%
|
|
| 1997 | 867 |
10.1%
|
|
| 1998 | 817 |
9.5%
|
|
| 1999 | 835 |
9.7%
|
|
| 2000 | 980 |
11.4%
|
|
| 2001 | 1013 |
11.8%
|
|
| 2002 | 787 |
9.2%
|
|
| 2003 | 464 |
5.4%
|
|
| 2004 | 195 |
2.3%
|
|
| 2005 | 63 |
0.7%
|
|
| 2006 | 22 |
0.3%
|
|
| 2007 | 7 |
0.1%
|
|
| 9998 | 23 |
0.3%
|
|
| Sysmiss | 83 |