Yonan Corporation's stock had a required return of 13.5% last year, when the riskfree rate was 6.3% and the market risk premium was 5.7%. Now suppose there is a shift in investor risk aversion, and the market risk premium increases by 3.2%. The risk-free rate and Yonan's beta remain unchanged. What is Yonan's new required return? Express your answer as a decimal to 4 decimal places (i.e. not 12.34 but .1234)