The Five-Year Plans of Vietnam are a series of economic development initiatives. The Vietnamese economy is shaped primarily by the Vietnamese Communist Party through the plenary sessions of the Central Committee and national congresses. The party plays a leading role in establishing the foundations and principles of communism, mapping strategies for economic development, setting growth targets, and launching reforms. Planning is a key characteristic of centralized, planned economy, and one plan established for the entire country normally contains detailed economic development guidelines for all its regions. According to Vietnamese economist Vo Nhan Tri, Vietnam's post-reunification economy was in a "period of transition to socialism". The process was described as consisting of three phases. The first phase, from 1976 through 1980, incorporated the Second Five-Year Plan (1976–80)--the First Five-Year Plan (1960–65) applied to North Vietnam only. The second phase, called "socialist industrialization", was divided into two stages: from 1981 through 1990 and from 1991 through 2005. The third phase, covering the years 2006 through 2010, was to be time allotted to "perfect" the transition. The party's goal is to unify the economic system of the entire country under socialism. Steps were taken to implement this goal at the long-delayed Fourth National Party Congress, convened in December 1976, when the party adopted the Second Five-Year Plan and defined both its "line of socialist revolution" and its "line of building a socialist economy". The next two congresses, held in March 1982 and December 1986, respectively, reiterated this long-term communist objective and approved the five-year plans designed to guide the development of the Vietnamese economy at each specific stage of the revolution. The first Five-Year Plan (1961–1965) The first North Vietnamese Five-Year Plan contained a provision for relocating people from the overpopulated provinces (Red River Delta) to the "underpopulated" provinces of the delta's mountain rim. Because of the ambitiousness of its original goal the Northern program did not reach its objective. The objective being to resettle each year a number of people corresponding to the increase of population. Between 1961 and 1975 no more than one million people were moved, whilst the population grew by 8 million people. The second Five-Year Plan (1976–80) The optimism and impatience of Vietnam's leaders were evident in the Second Five-Year Plan. The plan set extraordinarily high goals for the average annual growth rates for industry (16 to 18 percent), agriculture (8 to 10 percent), and national income (13