TTM20162015201420132012
Gross margin32.9%32.9%33.4%35.4%36.1%36.0%
Gross margin growth (bps)35-52-197-769-24
Operating margin4.4%4.8%5.7%8.8%10.1%10.2%
Operating margin growth (bps)44-99-308-124-18-60
Net profit margin2.8%3.1%3.6%5.3%6.3%6.3%
Net profit margin growth (bps)29-48-174-1024-42