You are given the following information concerning three portfolios, the market portfolio, and the risk-free asset: Portfolio RP 15.0% 14.0 8.3 11.2 4.8 OP 31% 26 16 Bp 1.85 1.25 0.85 1.00 0 Z 21 Market Risk-free 0 Assume that the correlation of returns on Portfolio Y to returns on the market is 0.82. What is the percentage of Portfolio Y's return that is driven by the market? (Round your answer to 4 decimal places.) R-squared