TTM20162015201420132012
Gross margin24.1%26.4%28.3%29.3%29.1%27.8%
Gross margin growth (bps)-413-195-1022812767
Operating margin-2.7%0.3%3.1%3.4%3.2%2.9%
Operating margin growth (bps)-562-279-34162919
Net profit margin-1.9%0.0%1.7%2.0%2.0%2.0%
Net profit margin growth (bps)-355-171-302-134