For much of the 20th century, Georgia's economy was within the Soviet model of command economy. Since the fall of the USSR in 1991, Georgia embarked on a major structural reform designed to transition to a free market economy. As with all other post-Soviet states, Georgia faced a severe economic collapse. The civil war and military conflicts in South Ossetia and Abkhazia aggravated the crisis. The agriculture and industry output diminished. By 1994 the gross domestic product had shrunk to a quarter of that of 1989.