Ecuador became a relatively heavy importer of arms in the late 1970s and early 1980s, averaging US$150 million annually and reaching a peak of US$280 million in 1982. These imports declined sharply to an average of US$50 million annually between 1985 and 1987, presumably as a result of a dramatic reduction in oil revenues and the precipitous drop in the value of the sucre, which made imported arms extremely expensive. Between 1983 and 1987, Ecuador imported an estimated US$460 million of arms, primarily from Italy, France, the United States, and Britain. In 1995, during the Cenepa War against Peru, Argentina gave to Ecuador 6,500 tons of rifles, cannons, anti-tank rockets, and ammunition in a controversial move.