year

2018

2019

2020

2021

2022

average

Cost of debt capital

3.66%

3.66%

3.66%

3.66%

3.66%

Debt capital ratio

11.46%

9.50%

11.35%

9.41%

9.31%

-

Cost of equity capital

13.53%

10.31%

9.37%

11.15%

11.18%

Percentage of equity capital

88.54%

90.50%

88.65%

90.59%

90.69%

WACC

11.40%

9.68%

8.72%

11.35%

11.38%

10.71%