TTM20172016201520142013
Gross margin59.7%59.7%61.0%61.3%61.8%62.6%
Gross margin growth (bps)-90-131-34-48-7611
Operating margin2.8%2.1%0.5%2.1%3.0%2.0%
Operating margin growth (bps)280161-161-96107-633
Net profit margin0.7%0.2%0.1%1.0%1.4%1.3%
Net profit margin growth (bps)1298-89-376-393