TTM20162015201420132012
Gross margin60.6%61.0%61.3%61.8%62.6%62.4%
Gross margin growth (bps)-153-34-48-7611111
Operating margin0.0%0.5%2.1%3.0%2.0%8.3%
Operating margin growth (bps)-309-161-96107-633297
Net profit margin-0.5%0.1%1.0%1.4%1.3%5.3%
Net profit margin growth (bps)-224-89-376-393179