TTM20172016201520142013
Gross margin31.3%32.6%38.1%39.9%38.7%38.3%
Gross margin growth (bps)-429-550-1791164811
Operating margin-13.2%-11.5%-1.2%1.3%1.0%2.6%
Operating margin growth (bps)-1,090-1,027-25731-157-523
Net profit margin-13.3%-9.6%0.8%0.8%0.5%2.1%
Net profit margin growth (bps)-1,459-1,039-130-159-521