TTM20172016201520142013
Gross margin37.8%37.8%38.3%39.1%40.8%43.1%
Gross margin growth (bps)-48-48-78-173-232-97
Operating margin2.9%2.9%5.4%1.8%1.3%3.7%
Operating margin growth (bps)-252-25236743-23624
Net profit margin1.7%1.7%1.9%-2.9%-2.1%0.5%
Net profit margin growth (bps)-19-19476-80-25844