Table 1.

Number of centenarians based on the income of the various countries.

	1980	2020
	per 10,000
High-income countries	0.28	2.60
Middle-income countries	0.06	0.42
Low-income countries	0.01	0.03
Total	0.10	0.74

Similar results are obtained by examining life expectancy. Source: Calculation by Busetta and Bono [13] based on United Nations, DESA, Population Division. World population prospects: the 2019 revision; https://population.un.org/wpp/Download/Standard/Population (accessed on 1 December 2020).