When she graduated from college 30 years ago, Dr. Nicola Riviera was already thinking of retirement. Since then, she has deposited $1,000 every six months into her 401k account. Nicola has just completed her final deposit and is at last ready to retire. Her 401k retirement fund has earned 8.5% annual interest, compounded semiannually. How much has Nicola accumulated in her retirement account? Enter your answer with a "$" and round to two decimals.