TTM20162015201420132012
Gross margin27.4%27.5%27.4%26.9%27.7%28.6%
Gross margin growth (bps)5950-78-92-120
Operating margin-1.2%-1.5%4.0%1.6%6.5%2.7%
Operating margin growth (bps)-527-551240-495381-608
Net profit margin-13.8%-8.7%2.1%0.7%3.2%-1.1%
Net profit margin growth (bps)-1,581-1,077140-252430-605