When will life expectancy at birth for both sexes reach 60 years in all countries?

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Recently, the world quietly marked a significant milestone. For the first time, life expectancy at birth for both sexes now exceeds 50 years in all countries, with Sierra Leone the lowest at 50.1 years. As of January 2019, there are no countries outside of Sub-Saharan Africa where the life expectancy at birth for both sexes is below 60.

This question asks: When, for the first time, will life expectancy at birth for both sexes reach at least 60 years in all countries simultaneously?

By 'for both sexes,' this question refers to the average for both sexes, not a requirement that life expectancy must equal 60 years for women and men individually.

Resolution should cite data from the World Health Organization, United Nations or a similarly authoritative body.

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