TTM20162015201420132012
Gross margin22.0%22.4%22.2%21.2%20.6%20.6%
Gross margin growth (bps)-53249959-2-33
Operating margin2.4%3.0%3.3%2.9%2.8%2.9%
Operating margin growth (bps)-74-283612-9144
Net profit margin1.3%1.7%1.9%1.6%1.5%1.5%
Net profit margin growth (bps)-51-14265-188