Common-size and trend percents for Rustynail Company's sales, cost of goods sold, and expenses follow Sales Cost of goods sold Total expenses Common-Size Percents 2015 2014 2013 100.0% 61.2 13.9 Trend Percents 2015 2014 2013 103.9% 100.0% 100.0% 63.4 14.4 100.0% 56.3 14.2 105.1% 118.4 112.9 100.0 106.7101.7100.0 Determine the net income for the following years. (Enter all amounts as positive values. Round your answers to nearest whole dollar.) 2015 2014 2013 Sales Cost of Goods Sold Total Expenses Net Income $105,100$ 103,900 100,000 56,300 14,200 $29,500 Did the net income increase, decrease, or remain unchanged in this three-year period? Remained unchanged Net income increased Net income decreased