Tom's daughter is going to college 5 years from now. And Tom is preparing to pay for his daughter's college tuition. The tuition is $20,000 per year. Tom's daughter is expected to finish her degree four years after she first enters college. Currently, Tom is planning to set up an education account with a 6% annual return. He is planning to put in $30,000 right now and make annual deposits in the next five years until his daughter starts college. How much does Tom need to deposit every year so that he has enough money to cover the tuition for the four years of college? Assume that the 6% return stops when Tom's daughter enters college.