Table 4 Overall technical efficiency results
|  | CRS—TTE | VRS – PTE – net t.eff | SE | |||
|---|---|---|---|---|---|---|
No. Eff | Mean | No. Eff | Mean | No. Eff | Mean | |
96 DMUs (2015–2020) | 5 | 0.8985 | 15 | 0.9471 | 5 | 0.94930 |
16 DMUs (2015) | 2 | 0.9348 | 6 | 0.9745 | 2 | 0.95955 |
16 DMUs (2016) | 3 | 0.9358 | 6 | 0.9719 | 3 | 0.96313 |
16 DMUs (2017) | 0 | 0.9246 | 0 | 0.9600 | 0 | 0.96359 |
16 DMUs (2018) | 0 | 0.9133 | 2 | 0.9553 | 0 | 0.95693 |
16 DMUs (2019) | 0 | 0.9011 | 2 | 0.9426 | 0 | 0.95714 |
16 DMUs (2020) | 0 | 0.7814 | 1 | 0.8780 | 0 | 0.89544 |