In 2010, the Global Health and Ageing report estimated that 524 million people were aged ≥ 65, representing 8% of the world’s population.
This figure is due to triple to 1.5 billion by 2050 (16% of the world’s population) [1] with 80% expected to be living outside of high-income
countries [1]. (Classification of countries by income status has been performed according to World Bank criteria, based on Gross National
Income per capita [2]. Worldbank. World Bank Atlas Method