TTM20162015201420132012
Gross margin37.9%37.6%36.2%35.3%37.1%38.2%
Gross margin growth (bps)3513989-179-109-23
Operating margin8.7%8.3%5.2%4.5%4.3%5.0%
Operating margin growth (bps)1433046822-64-119
Net profit margin7.1%5.7%3.4%3.2%3.0%3.5%
Net profit margin growth (bps)2222381223-49-84