| Value | Category | Cases | |
|---|---|---|---|
| 2004 | 64 |
2.8%
|
|
| 2005 | 403 |
17.7%
|
|
| 2006 | 454 |
19.9%
|
|
| 2007 | 610 |
26.7%
|
|
| 2008 | 663 |
29.1%
|
|
| 2009 | 38 |
1.7%
|
|
| 9997 | Inconsistent | 49 |
2.1%
|
| 9998 | DK | 0 |
0%
|
| Sysmiss | 3798 |