| Value | Category | Cases | |
|---|---|---|---|
| 2005 | 279 |
3.8%
|
|
| 2006 | 1237 |
16.6%
|
|
| 2007 | 1471 |
19.8%
|
|
| 2008 | 1636 |
22%
|
|
| 2009 | 1769 |
23.8%
|
|
| 2010 | 1044 |
14%
|
|
| Sysmiss | 3837 |