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

15.20%

5.60%

84.80%

11.09%

15.00%

10.13%

2015

11.91%

4.35%

88.09%

9.68%

15.00%

8.96%

2016

16.02%

4.69%

84.09%

9.81%

15.00%

8.88%

2017

24.90%

4.73%

75.10%

10.71%

15.00%

9.04%

2018

35.41%

4.72%

64.59%

9.86%

15.00%

7.79%

2019

30.26%

4.73%

69.78%

9.02%

15.00%

7.51%

2020

24.87%

4.74%

75.13%

5.32%

15.00%

4.99%

2021

61.39%

4.72%

38.61%

10.88%

15.00%

6.66%

2022

53.82%

4.74%

46.18%

5.85%

15.00%

4.86%