Hill Corp. began production of a new product. During the first calendar year, 1,000 units of the product were sold for $1,200 per unit. Each unit had a two-year warranty. Based on warranty costs for similar products, Hill estimates that warranty costs will average $100 per unit. Hill incurred $12,000 in warranty costs during the first year and $22,000 in warranty costs during the second year. The company uses the expense warranty accrual method. What should be the balance in the estimated liability under warranties account at the end of the first calendar year?