| Value | Category | Cases | |
|---|---|---|---|
| 1998 | 118 |
6.4%
|
|
| 1999 | 428 |
23.3%
|
|
| 2000 | 345 |
18.8%
|
|
| 2001 | 199 |
10.8%
|
|
| 2002 | 312 |
17%
|
|
| 2003 | 438 |
23.8%
|