TTM20162015201420132012
Gross margin29.1%28.4%27.6%24.8%23.7%23.5%
Gross margin growth (bps)927528910622-6
Operating margin6.0%4.5%3.5%1.6%4.1%3.8%
Operating margin growth (bps)17498197-25330-65
Net profit margin3.7%2.1%1.4%0.1%1.9%2.0%
Net profit margin growth (bps)17676125-181-7-45