| Value | Category | Cases | |
|---|---|---|---|
| 1997 | 243 |
1.9%
|
|
| 1998 | 1280 |
10.1%
|
|
| 1999 | 1377 |
10.9%
|
|
| 2000 | 1433 |
11.3%
|
|
| 2001 | 1408 |
11.1%
|
|
| 2002 | 1405 |
11.1%
|
|
| 2003 | 1368 |
10.8%
|
|
| 2004 | 1247 |
9.9%
|
|
| 2005 | 1379 |
10.9%
|
|
| 2006 | 1365 |
10.8%
|
|
| 9999 | 129 |
1%
|
|
| Sysmiss | 1264 |