| DMU | θ (A/B) | σ (A/B) | φS (A/B) | Returns to scale |
| 2008 | 1 | 1 | 1 | No change |
| 2009 | 1 | 1 | 1 | No change |
| 2010 | 1 | 1 | 1 | No change |
| 2011 | 1 | 1 | 1 | No change |
| 2012 | 1 | 1 | 1 | No change |
| 2013 | 1 | 1 | 1 | No change |
| 2014 | 1 | 1 | 1 | No change |