TTM20162015201420132012
Gross margin28.9%29.2%29.3%29.8%29.7%29.5%
Gross margin growth (bps)-45-6-56820143
Operating margin4.9%5.3%6.4%6.7%5.7%3.9%
Operating margin growth (bps)-91-110-36101178626
Net profit margin3.0%3.1%3.6%3.6%2.1%1.1%
Net profit margin growth (bps)-38-52-4152102357