TTM20152014201320122011
Gross margin60.3%60.4%60.7%62.8%64.4%66.9%
Gross margin growth (bps)16-155-216-155-253299
Operating margin2.0%1.3%-1.0%3.0%6.1%11.7%
Operating margin growth (bps)291101-402-302-566246
Net profit margin2.0%1.4%1.1%2.6%4.7%8.4%
Net profit margin growth (bps)20530-151-203-374204