| 年份 | 债务资本比例 | 债务资本成本 | 权益资本比例 | 权益资本成本 | 所得税税率 | WACC |
| 2014 | 88.35% | 5.60% | 11.65% | 10.87% | 15.00% | 5.47% |
| 2015 | 82.73% | 4.35% | 17.27% | 9.68% | 15.00% | 4.73% |
| 2016 | 44.76% | 4.42% | 55.24% | 9.67% | 15.00% | 7.02% |
| 2017 | 46.70% | 4.53% | 53.30% | 10.64% | 15.00% | 7.47% |
| 2018 | 52.36% | 4.60% | 47.64% | 9.73% | 15.00% | 6.68% |
| 2019 | 58.37% | 4.62% | 41.63% | 8.90% | 15.00% | 5.99% |
| 2020 | 55.82% | 4.64% | 44.18% | 5.36% | 15.00% | 4.57% |
| 2021 | 69.90% | 4.63% | 30.10% | 10.80% | 15.00% | 6.00% |
| 2022 | 70.56% | 4.66% | 29.44% | 5.88% | 15.00% | 4.52% |