| Value | Category | Cases | |
|---|---|---|---|
| 2010 | 127 |
63.5%
|
|
| 2011 | 54 |
27%
|
|
| 2012 | 16 |
8%
|
|
| 2013 | 3 |
1.5%
|
|
| Sysmiss | 5194 |