TTM20152014201320122011
Gross margin27.5%28.3%29.3%29.1%27.8%27.1%
Gross margin growth (bps)-153-1022812767-56
Operating margin1.7%3.1%3.4%3.2%2.9%2.8%
Operating margin growth (bps)-211-34162919-185
Net profit margin0.9%1.7%2.0%2.0%2.0%1.7%
Net profit margin growth (bps)-133-302-134-303