POPULATION GROWTH AFTER SECOND WORLD

At the beginning of mid-seventies the average world population growth rate started to decline from a highly of 2.1 percent in 1965-70 to about 1.6 percent in 2000. However, even with population growth rate curtailed, the absolute increase every year is still higher than that in the previous year. It is mostly because of the expanding population base. Since 1950 there have added around 2,000 million and still are adding around 75-80 million every year. UNDP estimates that the average annual growth rate between 2003 and 2015 would be around 1.1 percent. Even if this growth is reached, there shall be adding about 700 million by 2010 and another 400 million in the next 5 years. In 1950, about 32 percent of the world population was from the more developed regions in 1995, this came down to about 27 percent and in 2000 their share was down to about 23 percent and then to only 18 percent in 2008. By 2050, the developed county's share is likely to be only 14 percent. Between 1950 and 2000, the population in the developed regions increased by 50 percent while the developing regions increased by 170 percent. Africa's population, currently growing faster than any other major region, is estimated to account for 21 percent of world population by 2050, up from just 9 percent in 1950.

There were 1 billion populations in 1804. After 123 years this population reached 2 billion in 1927. The population growth rate grew in rapidly and world population reached 3 billion in 1960 by the 33 year later from in 1927. After 14 year later from 1960 the world population reached 4 billion in 1974. In 1987 and 1999 world population reached respectively 5 and 6 billion. In the present world population have reached 7 billion.  There is estimated the world population will reach 8 and 9 billion respectively in 2028 and 2054.