| Value | Category | Cases | |
|---|---|---|---|
| 1991 | 45 |
9.9%
|
|
| 1992 | 42 |
9.2%
|
|
| 1993 | 29 |
6.4%
|
|
| 1994 | 20 |
4.4%
|
|
| 1995 | 39 |
8.6%
|
|
| 1996 | 47 |
10.3%
|
|
| 1997 | 46 |
10.1%
|
|
| 1998 | 46 |
10.1%
|
|
| 1999 | 38 |
8.3%
|
|
| 2000 | 38 |
8.3%
|
|
| 2001 | 21 |
4.6%
|
|
| 2002 | 37 |
8.1%
|
|
| 2003 | 8 |
1.8%
|
|
| Sysmiss | 1699 |