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

McKenzie Sales, Limited Comparative Income Statement
	This Year	Last Year
Sales	$ 7,390,000	$ 5,616,400
Cost of goods sold	4,610,000	3,507,500
Gross margin	2,780,000	2,108,900
Selling and administrative expenses:
Selling expenses	1,375,000	1,080,500
Administrative expenses	711,500	616,500
Total expenses	2,086,500	1,697,000
Net operating income	693,500	411,900
Interest expense	103,000	86,000
Net income before taxes	$ 590,500	$ 325,900

Members of the companys board of directors are surprised to see that net income increased by only $264,600 when sales increased by $1,773,600.

Required:

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