| 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 | 29.45% | 0.00% | 70.55% | 12.27% | 15.00% | 8.65% |
| 2015 | 39.68% | 5.60% | 60.32% | 10.28% | 15.00% | 8.08% |
| 2016 | 28.70% | 4.35% | 71.30% | 10.24% | 15.00% | 8.36% |
| 2017 | 52.26% | 4.36% | 47.72% | 9.81% | 15.00% | 6.61% |
| 2018 | 57.14% | 4.50% | 42.86% | 10.78% | 15.00% | 6.80% |
| 2019 | 63.10% | 4.46% | 36.90% | 10.06% | 15.00% | 6.10% |
| 2020 | 52.67% | 4.42% | 47.33% | 9.20% | 15.00% | 6.33% |
| 2021 | 35.13% | 4.57% | 64.87% | 5.36% | 15.00% | 4.84% |
| 2022 | 54.22% | 4.62% | 45.78% | 10.88% | 15.00% | 7.10% |