TTM20172016201520142013
Gross margin82.0%82.0%72.1%65.3%58.4%49.9%
Gross margin growth (bps)987987678754844120
Operating margin7.5%7.5%7.6%7.4%5.1%8.4%
Operating margin growth (bps)-4-415223-324-415
Net profit margin8.6%8.6%4.3%4.3%2.9%5.4%
Net profit margin growth (bps)4304307137-253-242