TTM20162015201420132012
Gross margin52.6%55.7%54.5%54.4%54.6%53.5%
Gross margin growth (bps)-2711205-20113204
Operating margin8.0%11.2%8.7%9.3%8.3%6.8%
Operating margin growth (bps)-246249-59104148211
Net profit margin5.1%7.1%4.9%5.7%4.5%6.8%
Net profit margin growth (bps)-163221-83130-236251