The world population is expected to reach 8.4 billion by 2030, an increase of 19.8% from 2012. Older age groups will increase rapidly during this time influenced by increasing life expectancy, however, over half of the world's population will still be under 35 years of age in 2030. Urban population will continue to rise rapidly, at nearly twice the pace of total population growth, in 2012-2030 and should account for 60.2% of the world's population in 2030.