TTM20172016201520142013
Gross margin36.3%36.3%36.3%34.4%36.3%35.9%
Gross margin growth (bps)212186-19341-28
Operating margin0.3%0.5%-0.3%-1.3%0.1%0.0%
Operating margin growth (bps)148096-14114398
Net profit margin0.1%0.0%-1.3%-1.8%-0.2%-0.4%
Net profit margin growth (bps)11213346-15719432