2015 2014 2013 2012 2011 Sales $ 732,714 $ 475,788 $ 391,595 $ 267,300 $ 198,000 Cost of goods sold 383,561 249,010 206,679 140,146 102,960 Accounts receivable 35,683 27,786 26,707 15,664 13,583 Compute trend percents for the above accounts, using 2011 as the base year.