| Value | Category | Cases | |
|---|---|---|---|
| 2003 | 386 |
3.9%
|
|
| 2004 | 1319 |
13.2%
|
|
| 2005 | 1717 |
17.2%
|
|
| 2006 | 2392 |
23.9%
|
|
| 2007 | 2608 |
26.1%
|
|
| 2008 | 1552 |
15.5%
|
|
| 9999 | Missing | 24 |
0.2%
|
| Sysmiss | 4246 |