TTM20162015201420132012
Gross margin45.0%46.2%46.0%44.8%43.6%43.5%
Gross margin growth (bps)-127271201189-225
Operating margin13.9%13.9%13.6%13.2%12.7%13.0%
Operating margin growth (bps)-18264152-25-97
Net profit margin12.0%11.6%10.7%9.7%9.8%9.5%
Net profit margin growth (bps)1892101-829-108