| Value | Category | Cases | |
|---|---|---|---|
| 1991 | 12 |
1.9%
|
|
| 1992 | 39 |
6.1%
|
|
| 1993 | 38 |
6%
|
|
| 1994 | 40 |
6.3%
|
|
| 1995 | 50 |
7.9%
|
|
| 1996 | 32 |
5%
|
|
| 1997 | 26 |
4.1%
|
|
| 1998 | 41 |
6.4%
|
|
| 1999 | 57 |
9%
|
|
| 2000 | 70 |
11%
|
|
| 2001 | 67 |
10.5%
|
|
| 2002 | 56 |
8.8%
|
|
| 2003 | 82 |
12.9%
|
|
| 2004 | 26 |
4.1%
|
|
| Sysmiss | 917 |