If this is the table

- The average rate of change between 2010 and 2015 is \frac{39.0-35.6}{2015-2010} = \frac{3.4}{5} = 0.68
- The average rate of population growth between 2013 and 2015 is 0.35 million people per year. The number of years, it will take to reach 40 million can be found by \frac{40-39}{0.35} \approx 2.86 So, the population will reach 40 million in approximately 2.86 years or in 2018.

I found an answer from blog.wolfram.com

Wolfram Blog » Vitaliy Kaurov

Nov 4, 2020 **...** Halloween this **year** had **a** surprise up its sleeve. ... The Moon's color did not
**change**, though, at least for those away **from** the smoke of ... The Wolfram
Language **has** automatically determined **my** time zone and its offset: ... of
illumination **percentage**, and **a** phase is **still** considered full even **a** bit earlier or ...

For more information, see Wolfram Blog » Vitaliy Kaurov

I found an answer from en.wikipedia.org

Income inequality **in the** United States - Wikipedia

Income inequality in the United States is the extent to which income is distributed
in differing amounts among the American **population**. It **has** fluctuated
considerably since measurements began around 1915, ... decisions to **increase**
share prices. **Average annual** CEO options increased **from** $500,000 to over $3
**million**.

For more information, see Income inequality **in the** United States - Wikipedia