TTM20162015201420132012
Gross margin35.7%35.7%35.1%35.0%35.1%35.8%
Gross margin growth (bps)606013-16-6648
Operating margin11.4%11.4%11.2%11.3%10.0%9.0%
Operating margin growth (bps)2222-1512910517
Net profit margin7.2%7.2%6.9%7.1%6.0%4.8%
Net profit margin growth (bps)2525-13106122-63