A world map of average life expectancy by country. How does your nation rank?

life expectancies in 188 of the world's countries.

People are likely to live the longest in developed countries with state-funded healthcare systems like Japan, Canada and the UK, which each have average life expectancies of over 80 years.

The tiny tax haven of Monaco - with its notoriously wealthy inhabitants and compulsory state-funded health service - has the highest life expectancy at 88.68 years, according to the CIA World Factbook.

Of the top five longest-living nations, according to the CIA, the only large country is Japan, with the rest being city states
Life expectancy in America ranks in at 77.5 years - lower than Canada, Australia, New Zealand, Japan, and much of Europe.

People are likely to live the shortest in sub-Saharan Africa, with no country in that vast region having an average life expectancy of over 60. Only a few Asian countries, including Afghanistan and a couple of Caribbean nations, have such similarly short life expectancies.

The worst countries to live in if you want to reach old age are Angola, Zambia and Swaziland, whose people are generally expected to die before they even reach middle age.