TTM20152014201320122011
Gross margin35.6%37.5%38.3%38.5%39.3%39.6%
Gross margin growth (bps)-235-78-20-79-28273
Operating margin-2.1%5.6%5.4%7.9%7.5%8.5%
Operating margin growth (bps)-73225-25344-106206
Net profit margin-2.6%2.5%2.4%4.3%3.9%4.8%
Net profit margin growth (bps)-4819-18939-91478