TTM20172016201520142013
Gross margin15.6%15.4%16.3%17.3%18.2%18.8%
Gross margin growth (bps)-27-81-105-90-5650
Operating margin3.2%5.2%5.8%6.2%6.3%6.3%
Operating margin growth (bps)-219-69-34-15-348
Net profit margin1.6%3.6%3.0%3.4%3.3%3.6%
Net profit margin growth (bps)-13259-428-2948