TTM20162015201420132012
Gross margin36.1%36.0%35.3%35.1%35.2%35.3%
Gross margin growth (bps)207121-17-557
Operating margin13.8%13.5%12.9%12.7%12.3%12.6%
Operating margin growth (bps)55592440-34156
Net profit margin8.8%8.4%8.2%7.9%7.6%7.8%
Net profit margin growth (bps)49292234-18100