UnitedHealth Group today reported 2013 revenues of $122.5 billion, up 11 percent year-over-year, as well as double-digit percentage growth at each of its three major businesses. "In 2013 the quality and diversity of our products and services across the healthcare system ... drove exceptional growth," UnitedHealth President and CEO Stephen J. Hemsley said in the earnings report. The insurer also organically increased enrollment by more than 4.5 million people across all major market categories last year, including commercial, military, Medicare, Medicaid and international. That organic enrollment bump led to a 10 percent growth in UnitedHealth's annual revenues in 2013. Earnings Report (.pdf)