TTM20162015201420132012
Gross margin31.3%31.9%33.2%30.6%25.1%28.2%
Gross margin growth (bps)-116-131256549-310123
Operating margin0.5%0.4%2.1%-0.8%-5.6%-2.3%
Operating margin growth (bps)-86-175290482-32927
Net profit margin0.1%-0.6%0.9%-1.0%-3.1%-1.2%
Net profit margin growth (bps)44-144187209-19111