TTM20162015201420132012
Gross margin41.0%41.3%40.5%40.0%38.4%39.0%
Gross margin growth (bps)-178053159-58-110
Operating margin-4.2%-2.5%6.1%5.8%0.1%2.8%
Operating margin growth (bps)-739-86632569-274-227
Net profit margin-4.9%-3.6%3.5%2.9%-4.9%-0.9%
Net profit margin growth (bps)-587-70461779-408-3,850