You are thinking about purchasing some vacant land. You expect to be able to sell the land ten years from now for $2,100,000. What is the expected (annualized) return on this investment over the 10 -year holding period if you purchase the land for $350,000 ? (Prvide your answer in percentage with two decimals, but you don't have to put \%. For example, please provide 12.34 as your answer if your answer is 12.34% )