| Value | Category | Cases | |
|---|---|---|---|
| 2002 | 138 |
13.8%
|
|
| 2003 | 37 |
3.7%
|
|
| 2004 | 116 |
11.6%
|
|
| 2005 | 707 |
70.8%
|
|
| 2006 | 1 |
0.1%
|