TTM20162015201420132012
Gross margin31.3%30.9%30.0%35.3%35.6%35.9%
Gross margin growth (bps)7582-522-31-290
Operating margin8.5%8.2%6.8%12.1%12.4%12.4%
Operating margin growth (bps)69146-532-28-765
Net profit margin4.6%4.3%1.8%7.0%7.6%8.4%
Net profit margin growth (bps)70250-514-65-76101