| Value | Category | Cases | |
|---|---|---|---|
| 2005 | 1 |
0%
|
|
| 2006 | 254 |
7.2%
|
|
| 2007 | 709 |
20%
|
|
| 2008 | 815 |
23%
|
|
| 2009 | 942 |
26.6%
|
|
| 2010 | 808 |
22.8%
|
|
| 9997 | inconsistent | 15 |
0.4%
|
| 9998 | dk | 0 |
0%
|
| 10001 | .Z | 4688 |