| Value | Category | Cases | |
|---|---|---|---|
| 1991 | 16 |
2.4%
|
|
| 1992 | 38 |
5.7%
|
|
| 1993 | 37 |
5.6%
|
|
| 1994 | 42 |
6.3%
|
|
| 1995 | 53 |
8%
|
|
| 1996 | 31 |
4.7%
|
|
| 1997 | 28 |
4.2%
|
|
| 1998 | 43 |
6.5%
|
|
| 1999 | 62 |
9.4%
|
|
| 2000 | 73 |
11%
|
|
| 2001 | 68 |
10.3%
|
|
| 2002 | 61 |
9.2%
|
|
| 2003 | 80 |
12.1%
|
|
| 2004 | 31 |
4.7%
|
|
| Sysmiss | 890 |