TTM20162015201420132012
Gross margin27.9%28.6%29.2%29.1%29.2%29.4%
Gross margin growth (bps)-82-555-10-2520
Operating margin1.9%2.9%4.6%4.7%4.4%3.6%
Operating margin growth (bps)-137-169-7228776
Net profit margin0.9%1.6%2.6%2.6%2.5%2.0%
Net profit margin growth (bps)-93-971144765