| Value | Category | Cases | |
|---|---|---|---|
| 2005 | 385 |
5.3%
|
|
| 2006 | 1275 |
17.4%
|
|
| 2007 | 1443 |
19.7%
|
|
| 2008 | 1557 |
21.3%
|
|
| 2009 | 1622 |
22.2%
|
|
| 2010 | 1033 |
14.1%
|
|
| 9999 | Missing | 0 |
0%
|
| Sysmiss | 3958 |