You are given the following regression output using monthly returns on AMZN vs S&P 500: Regression statistics 0.64 0.41 Multiple R R Square Adjusted R Square Standard Error 0.40 0.066 Observations 60 Coefficients 0.02 Intercept S&P 500 1.45 What is the value of R2? Enter the value in percent. For example, if the number is 0.65, enter 65