| Value | Category | Cases | |
|---|---|---|---|
| 2006 | 1 |
0.1%
|
|
| 2007 | 343 |
18%
|
|
| 2008 | 485 |
25.4%
|
|
| 2009 | 433 |
22.7%
|
|
| 2010 | 434 |
22.8%
|
|
| 2011 | 211 |
11.1%
|
|
| 9999 | Missing | 0 |
0%
|
| Sysmiss | 425 |