TTM20172016201520142013
Gross margin23.6%24.0%23.3%22.4%23.1%23.6%
Gross margin growth (bps)-27182-72-44-91
Operating margin4.5%4.7%3.5%3.6%2.8%0.2%
Operating margin growth (bps)30123-1278258-466
Net profit margin3.0%3.1%2.3%3.1%1.3%-1.2%
Net profit margin growth (bps)4885-79175246168