TTM20152014201320122011
Gross margin40.3%39.4%38.6%37.5%35.8%39.2%
Gross margin growth (bps)16084106173-342-61
Operating margin12.3%11.9%10.7%7.9%5.6%10.8%
Operating margin growth (bps)113116280234-520279
Net profit margin5.1%0.5%2.5%0.2%0.8%4.1%
Net profit margin growth (bps)501-202227-59-32999