BE13.8 (LO 2) Vertical analysis (common-size) percentages for Palau Company's sales revenue, cost of goods sold, and expenses are as follows. Vertical Analysis 2020 2019 2018 Sales revenue 100.0% 100.0% 100.0% Cost of goods sold 60.5 62.9 Expenses 26.0 26.6 27.5 Did Palau's net income as a percent of sales increase, decrease, or remain unchanged over the 3-year period? Provide numerical support for your answer. 64.8