TTM20162015201420132012
Gross margin22.1%22.4%22.2%21.2%20.6%20.6%
Gross margin growth (bps)-29249959-2-33
Operating margin2.4%3.0%3.3%2.9%2.8%2.9%
Operating margin growth (bps)-86-283612-9144
Net profit margin1.4%1.7%1.9%1.6%1.5%1.5%
Net profit margin growth (bps)-53-14265-188