| Value | Category | Cases | |
|---|---|---|---|
| 2000 | 2 |
0.4%
|
|
| 2001 | 4 |
0.8%
|
|
| 2002 | 138 |
28.3%
|
|
| 2003 | 216 |
44.4%
|
|
| 2004 | 127 |
26.1%
|