TTM20172016201520142013
Gross margin45.7%47.8%45.2%47.1%45.6%41.8%
Gross margin growth (bps)35252-190151448219
Operating margin2.8%3.9%1.5%4.7%4.1%-0.6%
Operating margin growth (bps)-12240-324604721,209
Net profit margin1.5%2.2%0.4%7.2%3.7%-0.6%
Net profit margin growth (bps)57183-6863584221,238