Demography

Abstract

Over the next 50 years the world’s population is projected to increase from 6.1 billion to nine billion, corresponding with an annual growth rate shifting from 1.3 percent in 2000 to 0.3 percent in 2050. This contrasts with the 2.04 percent population growth during the 1960’s and the 1.33 percent during the 1990’s. Projections of HAS A show that the world population will peak at 9 billion around 2070 and then slowly decreases to a median value of 8.4 billion people in 2100, with the 80 percent prediction interval bounded by 5.6 and 12.1 billion⁴.