TTM20172016201520142013
Gross margin32.2%32.3%35.3%35.8%36.3%36.5%
Gross margin growth (bps)-215-250-49-53-2169
Operating margin5.3%5.9%11.9%12.9%13.4%14.2%
Operating margin growth (bps)-367-409-106-43-80140
Net profit margin3.7%3.6%7.5%8.1%8.3%8.9%
Net profit margin growth (bps)-191-266-58-26-5580