Between 2015 and 2030, the number of people in the world aged 60 years or over
is projected to grow by 56 per cent, from 901 million to 1.4 billion, and by 2050,
the global population of older persons is projected to more than double its size in
2015, reaching nearly 2.1 billion.
Globally, the number of people aged 80 years or over, the “oldest-old” persons, is
growing even faster than the number of older persons overall. Projections indicate
that in 2050 the oldest-old will number 434 million, having more than tripled in
number since 2015, when there were 125 million people over age 80.