| Value | Category | Cases | |
|---|---|---|---|
| 2005 | 388 |
5.1%
|
|
| 2006 | 1299 |
16.9%
|
|
| 2007 | 1524 |
19.9%
|
|
| 2008 | 1625 |
21.2%
|
|
| 2009 | 1776 |
23.1%
|
|
| 2010 | 1063 |
13.9%
|
|
| 9999 | Missing | 0 |
0%
|
| Sysmiss | 3598 |