TTM20172016201520142013
Gross margin25.3%25.1%26.4%28.3%29.3%29.1%
Gross margin growth (bps)-41-129-195-10228127
Operating margin-2.4%-2.4%0.3%3.1%3.4%3.2%
Operating margin growth (bps)-175-263-279-341629
Net profit margin-1.6%-1.8%0.0%1.7%2.0%2.0%
Net profit margin growth (bps)-90-187-171-302-1