lululemon athletica inc.reported the following information (dollars in US thousands) for the three fiscal years ended:

February 1, 2015	February 2, 2014	February 3, 2013
Net sales	$1,797,213	$1,591,188	$1,370,358
Cost of goods sold	883,033	751,112	607,532
Profit from operations	376,033	391,358	376,439
Profit	239,033	279,547	271,431

Calculate the gross profit margin and profit margin for lululemon for each of the three years.(Round answers to 1 decimal place, e.g. 52.7%.)

2015	2014	2013
Gross profit margin	%	%	%
Profit margin	%	%	%

Recalculate profit margin using profit from operations as opposed to profit.(Round answers to 1 decimal place, e.g. 52.7%.)

2015	2014	2013
Profit margin (Profit from operations)	%	%	%

Comment on whether the ratios improved or weakened over the three years. Over the three years the ratios has weakenedimproved .