TTM20152014201320122011
Gross margin49.8%49.3%54.2%58.1%59.5%57.8%
Gross margin growth (bps)-46-493-384-140170307
Operating margin14.7%14.4%18.5%26.7%27.8%29.8%
Operating margin growth (bps)-100-579-826-105-204315
Net profit margin3.7%2.8%6.7%11.9%14.0%16.6%
Net profit margin growth (bps)-22-513-521-212-261346