Common-size and trend percents for Rustynail Company's sales, cost of goods sold, and expenses follow Common-Size Percents Trend Percents 2014 2013 2012 2014 2013 2012 Sales Cost of goods 100.0% 100.0% 100.0% 104.3% 103.1% 100.0% 63.2 61.0 57.6 114.4 109.2 100.0 14.3 13.8 14.1 105.8 100.9 100.0 sold Total expenses Determine the net income for the following years. (Enter all amounts as positive values.) 2014 2013 2012 Sales Cost of Goods Sold Total Expenses Net Income $ 100,000 57,600 14,100 $ 28,300 Did the net income increase, decrease, or remain unchanged in this three- year period? Net income decreased Remained unchanged Net income increased