Mustang Corp. has a beta of 2.0. In one year Mustang is expected to have a payout ratio of 50% and earnings of $4/share. The expected rate of return of the market portfolio is 11%, the risk-free rate is 3%. Mustang's current stock price is 20 USD. What must the market believe is the expected growth rate of dividends? Assume dividends grow at the constant growth rate in perpetuity.