TTM20172016201520142013
Gross margin22.0%22.0%22.4%22.2%21.2%20.6%
Gross margin growth (bps)-39-39249959-2
Operating margin1.7%1.7%3.0%3.3%2.9%2.8%
Operating margin growth (bps)-128-128-283612-9
Net profit margin1.6%1.6%1.7%1.9%1.6%1.5%
Net profit margin growth (bps)-16-16-14265-1