TTM20142013201220112010
Gross margin28.7%28.6%29.5%29.4%28.6%28.5%
Gross margin growth (bps)-58-9111758N/A
Operating margin6.0%6.0%6.5%6.4%6.0%6.2%
Operating margin growth (bps)-22-481041-26-35
Net profit margin3.9%3.9%4.2%4.2%3.9%4.8%
Net profit margin growth (bps)-8-29-634-93-85