Sales $ 283,880 $ 271,800 $ 253,680 $ 235,560 $ 151,000 Cost of goods sold 129,200 123,080 116,280 107,440 68,000 Accounts receivable 19,100 18,300 17,400 16,200 10,000 Compute trend percents for the above accounts, using 2009 as the base year. (Omit the "%" sign in your response.)