Horizontal analysis (trend analysis) percentages for Dody Comapany's sales revenue, cost of goods sold, and expenses are shown below.

	2105	2014	2013
Sales	96.2	106.8	100.0
Cost of goods sold	102.0	97.0	100.0
Expenses	109.6	98.4	100.0

Did Dody's net income increase, decrease, or remain unchanged over the 3-year period?

2014
2015