TTM20182017201620152014
Gross margin35.6%36.6%38.1%37.3%40.8%42.7%
Gross margin growth (bps)-288-15488-352-194-150
Operating margin-0.1%1.5%3.0%4.0%6.8%9.8%
Operating margin growth (bps)-339-146-97-278-304-174
Net profit margin-0.8%0.6%1.6%2.1%4.0%6.0%
Net profit margin growth (bps)-261-100-45-189-201-151