| Value | Category | Cases | |
|---|---|---|---|
| 1992 | 28 |
4.9%
|
|
| 1993 | 37 |
6.5%
|
|
| 1994 | 41 |
7.2%
|
|
| 1995 | 37 |
6.5%
|
|
| 1996 | 46 |
8%
|
|
| 1997 | 24 |
4.2%
|
|
| 1998 | 23 |
4%
|
|
| 1999 | 50 |
8.7%
|
|
| 2000 | 62 |
10.8%
|
|
| 2001 | 59 |
10.3%
|
|
| 2002 | 68 |
11.9%
|
|
| 2003 | 66 |
11.5%
|
|
| 2004 | 31 |
5.4%
|
|
| Sysmiss | 981 |