You are given the following information concerning three portfolios, the market portfolio, and the risk-free asset: Portfolio 13.5% 12.5 7.1 10.6 35% 30 20 25 1.55 1.20 0.80 1.00 Market Risk-free Assume that the correlation of returns on Portfolio Y to returns on the market is 0.70. What is the percentage of Portfolio Y's return that is driven by the market? (Round your answer to 4 decimal places.) R-squared