TTM20152014201320122011
Gross margin37.1%37.1%36.8%37.0%37.0%36.7%
Gross margin growth (bps)224-20726-63
Operating margin-6.4%-5.8%5.9%5.4%7.2%7.0%
Operating margin growth (bps)-991-1,17150-18418123
Net profit margin-7.3%-6.5%3.6%2.0%3.5%2.7%
Net profit margin growth (bps)-1,009-1,003157-14677149