TTM20172016201520142013
Gross margin56.1%56.0%54.2%54.4%58.3%62.6%
Gross margin growth (bps)155181-21-386-428-82
Operating margin2.7%1.7%-1.6%1.7%0.2%8.6%
Operating margin growth (bps)345333-328151-847-2
Net profit margin2.1%1.1%2.0%5.0%-15.2%2.6%
Net profit margin growth (bps)-100-94-2962,019-1,78212