TTM20162015201420132012
Gross margin33.9%34.1%35.6%35.5%36.1%36.2%
Gross margin growth (bps)-97-15214-65-1139
Operating margin5.8%5.8%7.7%7.9%8.3%7.9%
Operating margin growth (bps)-67-193-24-373813
Net profit margin3.3%3.3%4.6%4.8%5.2%4.0%
Net profit margin growth (bps)-47-126-24-42124-1