TTM20162015201420132012
Gross margin22.4%22.4%22.2%21.2%20.6%20.6%
Gross margin growth (bps)24249959-2-33
Operating margin3.0%3.0%3.3%2.9%2.8%2.9%
Operating margin growth (bps)-28-283612-9144
Net profit margin1.7%1.7%1.9%1.6%1.5%1.5%
Net profit margin growth (bps)-14-14265-188