TTM20152014201320122011
Gross margin52.1%49.3%52.1%53.9%53.7%54.4%
Gross margin growth (bps)287-279-17317-75-35
Operating margin-0.4%-1.2%2.8%6.9%6.1%7.0%
Operating margin growth (bps)58-396-41383-90109
Net profit margin-0.7%-0.9%2.0%4.4%3.6%4.2%
Net profit margin growth (bps)11-293-24085-64105