20 largest health insurers, by revenue based on 2005 healthcare-related revenue from health, life and health statutory filings.
D019538:Health Care Surveys; D007182:Income / Q000706:statistics & numerical data* / Q000639:trends; D007343:Insurance Carriers / Q000145:classification / Q000191:economics* / Q000706:statistics & numerical data; D007348:Insurance, Health / Q000145:classification / Q000191:economics* / Q000706:statistics & numerical data; D014481:United States