TTM20162015201420132012
Gross margin38.4%39.1%40.1%38.6%37.6%43.9%
Gross margin growth (bps)-139-9814796-625339
Operating margin26.9%27.8%30.5%28.7%28.7%35.3%
Operating margin growth (bps)-248-2641755-663408
Net profit margin20.7%21.2%22.8%21.6%21.7%26.7%
Net profit margin growth (bps)-153-166123-6-499272