| Value | Category | Cases | |
|---|---|---|---|
| 1999 | 1999 | 3495 |
5.8%
|
| 2000 | 2000 | 12991 |
21.6%
|
| 2001 | 2001 | 32387 |
53.9%
|
| 2002 | 2002 | 6302 |
10.5%
|
| 2003 | 2003 | 2545 |
4.2%
|
| 2004 | 2004 | 2325 |
3.9%
|