A comparative income statement is given below for McKenzie Sales, Limited, of Toronto:

McKenzie Sales, Limited Comparative Income Statement
	This Year	Last Year
Sales	$ 7,320,000	$ 5,563,200
Cost of goods sold	4,600,000	3,513,500
Gross margin	2,720,000	2,049,700
Selling and administrative expenses:
Selling expenses	1,384,000	1,073,000
Administrative expenses	705,500	614,000
Total expenses	2,089,500	1,687,000
Net operating income	630,500	362,700
Interest expense	105,000	92,000
Net income before taxes	$ 525,500	$ 270,700

Members of the companys board of directors are surprised to see that net income increased by only $254,800 when sales increased by $1,756,800.

Required:

1. Express each year's income statement in common-size percentages