| Value | Category | Cases | |
|---|---|---|---|
| 2005 | 16 |
0.2%
|
|
| 2006 | 1017 |
15.3%
|
|
| 2007 | 1357 |
20.4%
|
|
| 2008 | 1576 |
23.7%
|
|
| 2009 | 1643 |
24.7%
|
|
| 2010 | 1044 |
15.7%
|
|
| Sysmiss | 4620 |