TTM20162015201420132012
Gross margin46.9%46.9%47.7%47.0%51.7%53.5%
Gross margin growth (bps)-80-8069-469-175117
Operating margin13.9%13.9%14.2%14.0%21.8%26.3%
Operating margin growth (bps)-24-2420-784-447498
Net profit margin8.6%8.6%8.7%8.5%13.2%15.9%
Net profit margin growth (bps)-6-618-467-270486