Key facts on ageing at the global level, the share of those 60-plus has risen from only 8% of world population (200 million people) in 1950 to around 11% (760 million) in 2011, with the dramatic increase still ahead as those 60-plus are expected to reach 22% (2 billion) by 2050.
At the global level, the share of those 80-plus has edged up from 0.6% of world population in 1950 (15 million) to around 1.6% of world population (110 million) in 2011, and is expected to reach 4% (400 million) by 2050