Suzanne and Kerry entered into a financial agreement. On January 1, 2014, Suzanne gave $9000 to Kerry. On April 1, 2014, Kerry repaid $3000 to Suzanne. On July 1, 2014, Kerry repaid $3600 to Suzanne, and Suzanne immediately place half of this payment into an account at Harlow Savings and Loan which earns at effective monthly compound interest rate of 0.5% Finally, on January 1, 2015, Kerry gave Suzanne $3000 to completely repay the loan. At the same time, Suzanne closed her account at Harlow Savings and Loan and withdrew the money in the account. What is Suzanne's dollar-weighted rate of return in this financial agreement, assuming simple interest for the rate of return?
Answer = % (Round your answer to four places after the decimal)