TTM20162015201420132012
Gross margin37.0%37.0%37.1%38.3%38.8%39.4%
Gross margin growth (bps)17-2-126-52-5516
Operating margin9.3%9.3%9.8%10.7%10.3%10.1%
Operating margin growth (bps)-27-52-873918-14
Net profit margin6.0%6.0%6.2%6.6%6.4%6.4%
Net profit margin growth (bps)-6-22-34221-2