The United States tops the overall ranking in The Global Competitiveness Report 2008-2009, issued by World Economic Forum.
Switzerland is in second position followed by Denmark, Sweden and Singapore. European economies continue to prevail in the top 10 with Finland, Germany and the Netherlands following suit. The United Kingdom, while remaining very competitive, has dropped by three places and out of the top 10, mainly attributable to a weakening of its financial markets.
The rankings are calculated from both publicly available data and the Executive Opinion Survey, a comprehensive annual survey conducted by the World Economic Forum together with its network of Partner Institutes (leading research institutes and business organizations) in the countries covered by the report.
Full version is available here http://www.weforum.org/pdf/GCR08/GCR08.pdf