Table 2.
Historical data of evaluation indicators.
| Index | 2017 | 2018 | 2019 | 2020 | 2021 |
|---|---|---|---|---|---|
| A11 (%) | 52.2 | 54.5 | 55.99 | 59.37 | 57.4 |
| A12 (tons of standard coal/10000 yuan) | 0.861 | 0.804 | 0.774 | 0.728 | 0.713 |
| A13 (ten thousand yuan per ton of standard coal) | 1.188 | 1.126 | 1.07 | 1.028 | 0.953 |
| A21 (tons of standard coal/10000 yuan) | 4.520 | 4.685 | 4.768 | 4.692 | 4.848 |
| A22 (vehicle/10000 persons) | 12.64 | 12.30 | 10.62 | 11.09 | 12.45 |
| A23 (m3) | 16 | 16.5 | 16.9 | 17.2 | 17.6 |
| A31 (%) | 0.697 | 0.674 | 0.783 | 0.745 | 0.763 |
| A32 (m3) | 11.6 | 12.01 | 12.51 | 12.9 | 13 |
| A33 (%) | 37.2 | 37.6 | 38 | 38.2 | 38.1 |
| A34 (%) | 88.4 | 89.9 | 89.5 | 91.6 | 92.2 |
| A35 (ten thousand tons/hundred million yuan) | 2.092 | 1.93 | 1.809 | 1.719 | 1.622 |
| A41 (%) | 5.21 | 4.9 | 4.6 | 7.2 | 6.1 |
| A42 (%) | 52.8 | 58.1 | 61.4 | 65.1 | 68.1 |