TTM20162015201420132012
Gross margin24.0%26.4%28.3%29.3%29.1%27.8%
Gross margin growth (bps)-354-195-1022812767
Operating margin-3.3%0.3%3.1%3.4%3.2%2.9%
Operating margin growth (bps)-498-279-34162919
Net profit margin-2.2%0.0%1.7%2.0%2.0%2.0%
Net profit margin growth (bps)-306-171-302-134