Compute the component percentages for Lowe's income statement below. Discuss any trends you observe.

	Lowe's Company INC.
	Consolidated Statement of Earnings
	(in millions, except per share and percentage data
		Jan 30, 2015	% of sales	Jan, 31, 2014	% of sales	Feb 1, 2013	% of sales
	Net Sales	$56,223	100%	$53,417	100%	$50,521	100%
	Cost of sales	36,665		34,941		33,194
	Gross Margin	19,558		18,476		17,327
	Expenses:
	Selling, general, and administrative	13,281		12,865		12,244
	Depreciation	1,485		1,462		1,523
	interest-net	516		476		423
	Total expenses	15,282		14,803		14,190
	Pre-tax earnings	4,276		3,673		3,137
	Income tax provision	1,578		1,387		1,178
	Net earnings	$2,698		$2,286		1,959