2050
In November 2001, the United Nations Population Fund reported that the world population is projected to be 9.3 billion in 2050 from 6.1 billion then with most of the increase in developing countries even as the population of industrialized countries will "remain stable". This figure was revised to 9.1 billion in 2005 and 9.2 billion in 2007. In 2008, the United States Census Bureau projected a world population of 9.5 billion.