| Value | Category | Cases | |
|---|---|---|---|
| 2006 | 210 |
2.8%
|
|
| 2007 | 1524 |
20.2%
|
|
| 2008 | 1607 |
21.3%
|
|
| 2009 | 1492 |
19.8%
|
|
| 2010 | 1446 |
19.2%
|
|
| 2011 | 1271 |
16.8%
|
|
| 9997 | Inconsistent | 0 |
0%
|
| 9999 | Missing | 0 |
0%
|
| Sysmiss | 76 |