From the 1960s to the end of the dictatorship in 1985, around one hundred people died or disappeared because of the political violence. In 1974 another hundred Uruguayans also disappeared in Argentina. In 1980, the dictatorship proposed a new constitution. The project was submitted to referendum and rejected in the first polls since 1971, with 58% of the votes against and 42% in favor. The result weakened the military and triggered its fall, allowing the return of democracy.