Mark Smith wants to save money to meet two objectives. First, he would like to be able to retire 20 years from now and have a retirement income of $30000 per year for at least 30 years. Second, he would like to purchase a fishing boat 5 years from now at an estimated cost of $20000. He can afford to save only $6000 per year for the first 10 years. Mark expects to earn 8% per year on average from investments over the next 50 years. What must his minimum annual saving be from years 11 through 20 to meet his objectives?