The world population prospects publication provides united nations population estimates for all countries in the world for each year between 1950 and 2020 and projections under different scenarios low medium and high for each year between 2020 and 2100 the figures presented here correspond to the projections for the current year in the medium scenario. Buy world population policies 2009 population studies by united nations isbn 9789211514674 from amazons book store everyday low prices and free delivery on eligible orders. Prior to joining the world bank in 1997 he worked on many population projects around the world for unfpa unicef usaid and the international union for the scientific study of population iussp he was posted in haiti west indies and new caledonia south pacific for the united nations he came to the us in 1987 and was appointed senior scientist at the futures group international a . The 2019 world population policies report presents the official government responses to the module on international migration module iii of the united nations twelfth inquiry among governments on population and development the inquiry the population division has been implementing the inquiry every five years since 1963 as part of its mandate to systematically monitor population policies