TTM20162015201420132012
Gross margin63.1%61.9%61.0%61.2%60.6%60.4%
Gross margin growth (bps)15496-21621248
Operating margin1.5%6.8%8.0%6.5%6.9%6.3%
Operating margin growth (bps)-672-125155-3860245
Net profit margin-3.9%3.6%3.5%2.4%13.3%1.7%
Net profit margin growth (bps)-7896115-1,0881,152546