2019 2018 2017 2016 2015 Sales $ 535,025 $ 356,683 $ 291,170 $ 204,330 $ 147,000 Cost of goods sold 264,562 176,325 145,973 101,172 72,030 Accounts receivable 25,949 20,830 19,887 11,933 10,069 Compute trend percents for the above accounts, using 2015 as the base year.