TTM20172016201520142013
Gross margin30.5%30.5%28.4%27.9%27.1%28.1%
Gross margin growth (bps)2102105482-11075
Operating margin0.7%0.7%-1.7%-0.9%-1.7%0.3%
Operating margin growth (bps)240240-8084-2029
Net profit margin0.6%0.6%-1.9%-1.1%-1.8%0.3%
Net profit margin growth (bps)247247-8077-2084