| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1. Before 2010 EC | 9 |
31%
|
| 2 | 2. 2010 | 2 |
6.9%
|
| 3 | 3. 2011 | 3 |
10.3%
|
| 4 | 4. 2012 | 5 |
17.2%
|
| 5 | 5. 2013 | 6 |
20.7%
|
| 6 | 6. 2014 | 4 |
13.8%
|
| Sysmiss | 404 |