TTM20162015201420132012
Gross margin37.5%37.6%36.2%35.3%37.1%38.2%
Gross margin growth (bps)8613989-179-109-23
Operating margin8.3%8.3%5.2%4.5%4.3%5.0%
Operating margin growth (bps)2213046822-64-119
Net profit margin6.2%5.7%3.4%3.2%3.0%3.5%
Net profit margin growth (bps)2322381223-49-84