TTM20162015201420132012
Gross margin32.1%32.9%35.1%32.9%35.6%35.7%
Gross margin growth (bps)-205-225225-269-1338
Operating margin-10.4%-5.3%6.2%0.8%9.6%9.3%
Operating margin growth (bps)-1,568-1,153539-87632105
Net profit margin-11.4%-8.2%0.3%-3.0%3.5%3.2%
Net profit margin growth (bps)-1,109-850333-65630243