| Value | Category | Cases | |
|---|---|---|---|
| 210 | 1 |
0.2%
|
|
| 2007 | 67 |
11.3%
|
|
| 2008 | 209 |
35.2%
|
|
| 2009 | 231 |
39%
|
|
| 2010 | 85 |
14.3%
|
|
| Sysmiss | 356 |