Q2 2018Q1 2018Q4 2017Q3 2017Q2 2017
Gross margin34.5%34.6%33.7%34.1%34.2%
Gross margin growth (bps)2523-69-29-22
Operating margin10.4%8.4%7.1%9.2%12.2%
Operating margin growth (bps)-186-81-9532699
Net profit margin7.3%5.7%3.6%5.2%7.3%
Net profit margin growth (bps)0212-6227989