| Value | Category | Cases | |
|---|---|---|---|
| 0 | 32 |
60.4%
|
|
| 2005 | 1 |
1.9%
|
|
| 2006 | 2 |
3.8%
|
|
| 2007 | 6 |
11.3%
|
|
| 2008 | 9 |
17%
|
|
| 2009 | 1 |
1.9%
|
|
| 2010 | 2 |
3.8%
|
|
| Sysmiss | 8 |