| value | category | cases | |
|---|---|---|---|
| 1998 | 415 |
3.9%
|
|
| 1999 | 2207 |
20.7%
|
|
| 2000 | 2290 |
21.5%
|
|
| 2001 | 1956 |
18.4%
|
|
| 2002 | 2126 |
20%
|
|
| 2003 | 1651 |
15.5%
|