The index presented in this report represents a continuation of our efforts to develop an objective measure of economic freedom. Ratings are presented for 57 nations in 1970, 83 in 1975, 107 in 1980, 111 in 1985, 115 in 1990, 122 in 1995, and 123 in 1997. This is the first publication to present ratings for 1970. Although more recent data are available for some components, we present 1997 data mainly because the data for that year are virtually complete.