Puerto Rico, by virtue of its long political association with the United States, is the most Protestant of Latin American countries, with a Protestant population of approximately 33 to 38 percent, the majority of whom are Pentecostal. David Stoll calculates that if we extrapolate the growth rates of evangelical churches from 1960 to 1985 for another twenty-five years Puerto Rico will become 75 percent evangelical. (Ana Adams: "Brincando el Charco..." in "Power, Politics and Pentecostals in Latin America", Edward Cleary, ed., 1997. p. 164).