TTM20172016201520142013
Gross margin31.6%31.6%32.9%35.1%32.9%35.6%
Gross margin growth (bps)-130-130-225225-269-13
Operating margin-9.6%-9.6%-5.3%6.2%0.8%9.6%
Operating margin growth (bps)-434-434-1,153539-87632
Net profit margin-11.3%-11.3%-8.2%0.3%-3.0%3.5%
Net profit margin growth (bps)-309-309-850333-65630