Solve this according the formula of life expectancy.
According to The Global Health Observatory, global life expectancy has increased by more than 6 years between 2000 and 2019 – from 66.8 years in 2000 to 73.4 years in 2019.
To find the average annual increase in global life expectancy, we can use the formula:
Average annual increase = (Final life expectancy - Initial life expectancy) / Number of years
Using the given values from 2000 to 2019:
Initial life expectancy = 66.8 years
Final life expectancy = 73.4 years
Number of years = 2019 - 2000 + 1 = 20
Average annual increase = (73.4 - 66.8) / 20
= 6.6 / 20
= 0.33 years per year
Therefore, the average annual increase in global life expectancy between 2000 and 2019 is approximately 0.33 years per year.