TTM20162015201420132012
Gross margin62.0%61.7%60.7%61.4%60.7%60.8%
Gross margin growth (bps)48102-6569-1779
Operating margin13.2%14.5%14.8%13.8%15.5%15.5%
Operating margin growth (bps)-172-34101-167-3198
Net profit margin8.4%8.8%7.6%7.3%5.5%6.8%
Net profit margin growth (bps)3012027180-130110