TTM20162015201420132012
Gross margin29.6%29.6%30.4%30.0%30.7%32.1%
Gross margin growth (bps)-75-7535-41-143-9
Operating margin3.4%3.4%3.3%4.5%6.0%6.7%
Operating margin growth (bps)1111-119-152-72-200
Net profit margin2.0%2.0%1.4%2.7%3.7%5.1%
Net profit margin growth (bps)6464-135-94-146-346