WHO’s annual statistics report shows that low-income countries have made the greatest progress, with an average increase in life expectancy by 9 years from 1990 to 2012. The top six countries where life expectancy increased the most were Liberia which saw a 20-year increase (from 42 years in 1990 to 62 years in 2012) followed by Ethiopia (from 45 to 64 years), Maldives (58 to 77 years), Cambodia (54 to 72 years), Timor-Leste (50 to 66 years) and Rwanda (48 to 65 years).
Wherever they live in the world, women live longer than men. The gap between male and female life expectancy is greater in high-income countries where women live around six years longer than men. In low-income countries, the difference is around three years.
Declining tobacco use is also a key factor in helping people live longer in several countries.