Comparative statements for Kool Corporation are shown below:

KOOL CORPORATION Comparative Income Statement For the Years Ended December 31
	2014	2013	2012
Sales	$14,800	$13,229	$13,994
Cost of goods sold	8,225	8,661	8,375
Gross profit	6,575	4,568	5,619
Operating expenses	3,664	3,576	3,487
Operating income	$ 2,911	$ 992	$ 2,132

Calculate trend percentages for all income statement amounts shown and comment on the results. Use 2012 as the base year.