TTM20172016201520142013
Gross margin35.7%37.8%37.3%37.1%36.8%37.0%
Gross margin growth (bps)-238482224-207
Operating margin-41.2%-24.8%-7.2%-5.8%5.9%5.4%
Operating margin growth (bps)-3,522-1,759-135-1,17150-184
Net profit margin-35.7%-21.6%-7.4%-6.5%3.6%2.0%
Net profit margin growth (bps)-2,859-1,418-95-1,003157-146