TTM20172016201520142013
Gross margin48.7%48.7%51.9%54.3%57.0%57.1%
Gross margin growth (bps)-314-314-243-271-989
Operating margin-15.2%-15.2%4.2%9.0%16.1%17.2%
Operating margin growth (bps)-1,940-1,940-484-712-10812
Net profit margin-17.0%-17.0%2.8%7.1%11.0%11.9%
Net profit margin growth (bps)-1,980-1,980-431-390-89-49