The bar graph shows that life expectancy, the number of years newborns are expected to live, in a particular region has increased dramatically since ancient times. Find the percent increase in average life expectancy of the region from the Stone Age to 2016. 80- 70- 71 62 60- 51 50- 40- 31 33 30 30- 26 20- 10- Stone Age Ancient Middle Greece Ages 1900 1950 1980 2016 Time Period/Year ...... (Round to the nearest integer as needed.) Average Life Expectancy (years)

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