TTM20162015201420132012
Gross margin51.8%51.2%48.4%50.9%52.8%55.7%
Gross margin growth (bps)287278-247-193-287-122
Operating margin16.6%18.0%17.9%20.9%24.6%27.5%
Operating margin growth (bps)-115-301-367-287-120
Net profit margin11.7%12.9%12.9%13.3%17.6%19.7%
Net profit margin growth (bps)-613-39-427-218135