TTM20142013201220112010
Gross margin38.9%38.8%39.1%38.2%38.7%38.0%
Gross margin growth (bps)-21-3391-527512
Operating margin2.5%2.9%3.7%4.3%5.3%5.4%
Operating margin growth (bps)-99-83-64-94-13126
Net profit margin0.9%1.2%1.7%2.0%2.5%2.6%
Net profit margin growth (bps)-71-49-29-51-12143