TTM20162015201420132012
Gross margin34.4%34.6%34.8%34.8%34.6%34.3%
Gross margin growth (bps)-32-2732029-26
Operating margin8.7%9.0%8.4%8.5%7.8%7.0%
Operating margin growth (bps)-1258-11767252
Net profit margin4.2%4.8%4.3%4.8%4.3%3.9%
Net profit margin growth (bps)-3645-49524021