TTM20162015201420132012
Gross margin33.4%33.4%34.0%35.5%35.3%35.6%
Gross margin growth (bps)-62-62-14313-2520
Operating margin5.0%5.0%6.8%8.3%8.2%8.0%
Operating margin growth (bps)-178-178-1581524139
Net profit margin2.6%2.6%4.0%4.9%4.8%5.0%
Net profit margin growth (bps)-135-135-916-14-227