| Value | Category | Cases | |
|---|---|---|---|
| 2005 | 8 |
1%
|
|
| 2006 | 34 |
4.3%
|
|
| 2007 | 94 |
11.9%
|
|
| 2008 | 213 |
26.9%
|
|
| 2009 | 284 |
35.8%
|
|
| 2010 | 159 |
20.1%
|
|
| 2011 | 1 |
0.1%
|
|
| Sysmiss | 18546 |