TTM20162015201420132012
Gross margin34.5%38.1%39.9%38.7%38.3%38.1%
Gross margin growth (bps)-554-179116481192
Operating margin-2.2%-1.2%1.3%1.0%2.6%7.8%
Operating margin growth (bps)-137-25731-157-523684
Net profit margin-0.5%0.8%0.8%0.5%2.1%7.3%
Net profit margin growth (bps)-195-130-159-521689