TTM20172016201520142013
Gross margin46.9%46.4%45.7%45.2%45.1%44.3%
Gross margin growth (bps)1226862167455
Operating margin9.3%9.2%10.4%11.1%8.8%5.1%
Operating margin growth (bps)-36-120-75235372364
Net profit margin4.7%4.3%6.8%7.4%5.8%3.0%
Net profit margin growth (bps)-188-252-53153287236