These actions reflect our continuing strategic investments, designed to support long-term growth. We also further differentiate Genpact in the market and are contributing to our current results and client wins.
Here are the highlights for the full year, revenues of $1.6 billion increased 27% from 2010. This was driven by growth from our Global Clients business, led by demand for business process management services and for the first time in five years, substantial growth for IT services. Within Global Clients, BPM, Smart Decision Services led all offerings with 52% growth, revenues from GE increased by 2% from last year.
Adjusted operating income margin expanded 30 basis points from 2010, net income increased by 30%, diluted earnings per share increased by 29% and adjusted earnings per share grew by 32%.
We won a record number of new logos in 2011 and expanded client relationships with existing clients across all size of engagement categories. The number of clients in the category representing $1 million to $5 million in annual revenues grew the fastest in 2011 increasing 89% to $121.During 2011, we significantly added to our capabilities and vertical domain expertise through acquisitions, the largest being Headstrong in May. Since the acquisition, we have won 21 cross-sell deals and have begun the dialog for larger transformational engagements in the capital market space. Our most recent acquisition of EmPower Research has given us new capabilities in the high growth arena of social media research. Through this acquisition, we added significant expertise and a high caliber front-end team to the analytics practice of our Smart Decision Services business. EmPower’s capabilities also provide access to Chief Marketing Officers creating further cross-sell opportunities. Our continuing investments in business development, vertical domain expertise, and new products and capabilities are paying off. The combination of winning new logos, expansion of client relationships and new capabilities gives Genpact a tremendous runway for future growth. Read the rest of this transcript for free on seekingalpha.com