TTM20162015201420132012
Gross margin41.6%41.2%42.8%43.5%43.6%43.1%
Gross margin growth (bps)-56-157-72-64453
Operating margin6.3%6.6%7.7%9.2%10.0%8.9%
Operating margin growth (bps)-121-107-150-8411862
Net profit margin3.3%3.6%4.7%5.5%6.2%5.6%
Net profit margin growth (bps)-114-118-79-706650