TTM20172016201520142013
Gross margin63.7%63.6%65.3%64.6%69.2%69.2%
Gross margin growth (bps)-124-17169-457-302
Operating margin-2.8%-2.3%-2.2%-30.7%6.1%7.9%
Operating margin growth (bps)117-92,850-3,687-183-231
Net profit margin-0.2%0.2%-3.5%-29.1%3.1%4.1%
Net profit margin growth (bps)4533802,553-3,214-109-176