TTM20172016201520142013
Gross margin23.6%24.0%24.6%24.4%23.4%23.4%
Gross margin growth (bps)-106-5416100-228-35
Operating margin2.8%3.3%4.8%1.6%-1.8%-1.8%
Operating margin growth (bps)-250-149326335-228-154
Net profit margin1.0%1.8%4.8%0.1%-2.8%-0.2%
Net profit margin growth (bps)-453-303473285-25476