| Value | Category | Cases | |
|---|---|---|---|
| 1 | 2011 | 188 |
25%
|
| 2 | 2010 | 1 |
0.1%
|
| 3 | 2009 | 0 |
0%
|
| 4 | 2012 | 562 |
74.8%
|
| Sysmiss | 594 |