TTM20162015201420132012
Gross margin28.9%29.9%30.0%30.6%31.3%31.5%
Gross margin growth (bps)-126-16-60-67-1988
Operating margin5.2%5.7%7.4%8.1%8.6%9.0%
Operating margin growth (bps)-156-168-77-51-3368
Net profit margin3.5%3.6%4.5%5.1%5.4%5.0%
Net profit margin growth (bps)-71-92-51-3845-8