TTM20162015201420132012
Gross margin62.3%61.6%61.4%61.3%60.8%60.9%
Gross margin growth (bps)97241242-919
Operating margin8.9%10.6%10.2%10.2%11.2%11.7%
Operating margin growth (bps)-18541-4-94-52365
Net profit margin4.4%5.3%4.9%3.5%5.2%5.0%
Net profit margin growth (bps)-9042137-16614367