TTM20162015201420132012
Gross margin23.5%22.7%18.5%15.7%14.9%14.4%
Gross margin growth (bps)2224122798256-127
Operating margin7.9%5.5%4.2%3.1%2.9%3.1%
Operating margin growth (bps)13713010324-23-26
Net profit margin3.0%3.2%2.3%1.7%1.5%1.7%
Net profit margin growth (bps)-6856119-15-1