Exercise 13-5 Determining income effects from common-size and trend percents LO P1, P2 Common-size and trend percents for Rustynail Company's sales, cost of goods sold, and expenses follow. Determine the net income for the following years. Did the net income increase, decrease, or remain unchanged in this three-year period? Complete this question by entering your answers in the tabs below. Determine the net income for the following years. (Enter all amounts as positive values.)