TTM20152014201320122011
Gross margin31.4%31.3%32.4%32.6%33.5%32.8%
Gross margin growth (bps)7-108-26-907154
Operating margin-2.6%-3.0%-4.4%-2.7%-0.6%-0.1%
Operating margin growth (bps)51141-165-214-52-136
Net profit margin-5.8%-5.8%-10.3%-9.5%-2.2%-3.8%
Net profit margin growth (bps)8451-84-735167-206