TTM20182017201620152014
Gross margin11.0%11.0%11.3%11.3%11.1%10.7%
Gross margin growth (bps)-29-29-2264214
Operating margin3.2%3.2%3.2%3.1%3.1%2.9%
Operating margin growth (bps)-2-29-326-4
Net profit margin2.2%2.2%2.1%2.0%2.0%1.8%
Net profit margin growth (bps)141410-722-11