TTM20152014201320122011
Gross margin41.7%42.3%41.7%42.3%43.6%43.9%
Gross margin growth (bps)-4563-62-131-3050
Operating margin-2.3%-0.2%-0.1%2.4%6.2%7.3%
Operating margin growth (bps)-245-6-250-384-113237
Net profit margin-1.8%-0.7%-0.5%1.3%3.8%4.5%
Net profit margin growth (bps)-134-12-182-255-68153