Here is world population data compiled by the United Nations

Here is world population data compiled by the United Nations. Using all the data, the best-fitting exponential model P(t) = P0 exp(rt) has a growth rate of % per year. It predicts populations P(1750) = billion, P(1900) billion, and P(2000) billion. Using only the years 1750-1850, the best-fitting exponential model P(t) = P0 exp(rt) has a growth rate of % per year. It predicts populations P( 1750) = billion, P(1900) = billion, and P(2000) = billion. Using only the years 1850-1950, the best-fitting exponential model P(t) = P0exp(rt) has a growth rate of % per year. It predicts populations P(1750) billion, P(1900) billion, and P(2000) billion. Using only the years 1900-2000, the best-fitting exponential model P(t) = P0exp(rt) has a growth rate of % per year. It predicts populations P(1750) = billion, P(1900) = billion, and P(2000) = billion.

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