| Value | Category | Cases | |
|---|---|---|---|
| 2000 | 36 |
7.8%
|
|
| 2001 | 28 |
6%
|
|
| 2002 | 68 |
14.7%
|
|
| 2003 | 170 |
36.6%
|
|
| 2004 | 162 |
34.9%
|