TTM20172016201520142013
Gross margin35.9%35.9%31.6%28.5%39.9%41.1%
Gross margin growth (bps)176423314-1,143-116312
Operating margin-1.8%-3.6%-9.7%-8.5%9.9%12.6%
Operating margin growth (bps)355616-125-1,844-266297
Net profit margin-2.4%-3.7%-7.1%-5.8%6.1%7.7%
Net profit margin growth (bps)219346-137-1,182-169195