Efficiency | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | Mean value | |
Comprehensive technical efficiency | Transaction phase | 0.766 | 0.732 | 0.847 | 0.770 | 0.803 | 0.701 | 0.659 | 0.622 | 0.594 | 0.585 | 0.708 |
DEA effective | 3 | 2 | 5 | 3 | 4 | 4 | 4 | 4 | 2 | 4 | 3.5 | |
Pure technical efficiency | Transaction phase | 0.956 | 0.952 | 0.955 | 0.934 | 0.954 | 0.911 | 0.921 | 0.895 | 0.888 | 0.877 | 0.924 |
DEA effective | 12 | 13 | 14 | 10 | 14 | 10 | 13 | 9 | 8 | 12 | 11.5 | |
Scale efficiency | Transaction phase | 0.801 | 0.769 | 0.887 | 0.825 | 0.841 | 0.769 | 0.714 | 0.699 | 0.672 | 0.672 | 0.765 |
DEA effective | 3 | 2 | 5 | 3 | 4 | 5 | 4 | 4 | 2 | 4 | 3.6 |