TTM20172016201520142013
Gross margin30.8%30.5%28.4%27.9%27.1%28.1%
Gross margin growth (bps)1722105482-11075
Operating margin1.5%0.7%-1.7%-0.9%-1.7%0.3%
Operating margin growth (bps)302240-8084-2029
Net profit margin1.4%0.6%-1.9%-1.1%-1.8%0.3%
Net profit margin growth (bps)310247-8077-2084