"Economic Freedom of the World" is the most comprehensive index of economic freedom available. In the ninth edition of this widely acclaimed annual report, James Gwartney and Robert Lawson rank the economic freedom of 127 nations, using strict academic measures appropriate for peer-reviewed research. First published in 1996, the report is the result of more than a decade of research by more than 100 leading scholars. Every year the authors update the data in collaboration with member institutes in 69 nations, making it the most comprehensive measure in the world. Approximately 200 scholarly articles have employed the data developed in this index.