年份

2017

2018

2019

2020

2021

债务资本比重

37.67%

47.42%

46.37%

25.50%

28.19%

债务资本成本

3.41%

3.37%

3.36%

3.39%

3.45%

股权资本比重

62.33%

52.58%

53.63%

74.50%

71.81%

股权资本成本

8.75%

8.15%

9.83%

8.73%

8.53%

加权平均资本成本率

67.39%

58.85%

68.28%

73.69%

70.98%