TTM20172016201520142013
Gross margin44.7%44.7%45.8%43.8%49.0%46.2%
Gross margin growth (bps)-111-111198-520285114
Operating margin-6.7%-6.7%-24.1%5.2%20.6%17.1%
Operating margin growth (bps)1,7391,739N/A-1,5443519
Net profit margin21.5%21.5%-60.6%1.7%10.5%-9.5%
Net profit margin growth (bps)8,2158,215-6,233-8812,0013,530