TTM20172016201520142013
Gross margin38.9%34.8%31.8%35.7%37.0%35.9%
Gross margin growth (bps)652295-385-130109-68
Operating margin10.2%5.4%2.5%8.8%8.9%3.5%
Operating margin growth (bps)755290-631-8534932
Net profit margin4.3%0.1%0.3%4.3%4.9%1.2%
Net profit margin growth (bps)426-16-407-55370225