| Value | Category | Cases | |
|---|---|---|---|
| 1 | 2012 | 80 |
32.3%
|
| 2 | 2011 | 105 |
42.3%
|
| 3 | 2010 | 37 |
14.9%
|
| 4 | 2009 | 12 |
4.8%
|
| 5 | otro | 14 |
5.6%
|
| Sysmiss | 31 |