TTM20162015201420132012
Gross margin27.1%27.8%27.3%27.1%27.7%27.5%
Gross margin growth (bps)-484623-572075
Operating margin2.3%3.1%3.2%3.0%4.1%4.7%
Operating margin growth (bps)-101-218-115-5755
Net profit margin2.2%2.8%2.1%2.0%2.7%3.1%
Net profit margin growth (bps)4728-68-3931