TTM20152014201320122011
Gross margin45.9%45.9%45.7%46.2%46.4%42.7%
Gross margin growth (bps)1616-52-16370-288
Operating margin6.8%6.8%3.2%10.4%13.1%8.3%
Operating margin growth (bps)357357-722-272486-484
Net profit margin2.3%2.3%-1.4%4.1%4.9%1.0%
Net profit margin growth (bps)368368-547-79384-685