Now it's dropped two years for men and two years for women. Just this year, the average has dropped two years.

When you see these jumps, that's almost always indicative of a greater number of children not dying in infancy, not people who survive childhood living decades longer. As reproductive health gets better, life expectancy goes up, for this reason, and because people who are pregnant are at a greater risk of death than someone who is not. As the number of people who die in childbirth goes down, who are generally younger, and the number of children who survive infancy goes down, countries see a rise in their life expectancy.