TTM20162015201420132012
Gross margin28.9%30.2%33.8%30.5%32.3%34.4%
Gross margin growth (bps)-503-359332-182-208-184
Operating margin2.9%4.7%8.8%6.3%9.7%11.7%
Operating margin growth (bps)-1,468-409251-335-201-136
Net profit margin1.9%2.6%5.0%3.2%5.3%6.5%
Net profit margin growth (bps)-309-234180-210-120-31