TTM20162015201420132012
Gross margin14.4%14.2%14.6%14.6%14.7%14.8%
Gross margin growth (bps)8-39-4-9-11-17
Operating margin4.7%4.7%5.2%5.4%5.6%5.3%
Operating margin growth (bps)-33-52-21-92910
Net profit margin3.1%3.1%3.2%3.7%3.7%3.3%
Net profit margin growth (bps)-14-13-51336-30