The Global Competitiveness Report (GCR) is a yearly report published by the World Economic Forum. Since 2004, the Global Competitiveness Report ranks countries based on the Global Competitiveness Index, developed by Xavier Sala-i-Martin and Elsa V. Artadi. Before that, the macroeconomic ranks were based on Jeffrey Sachs's Growth Development Index and the microeconomic ranks were based on Michael Porter's Business Competitiveness Index. The Global Competitiveness Index integrates the macroeconomic and the micro/business aspects of competitiveness into a single index.