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Originally Posted by Desert Mariner
Dragoon500ly’s thread on population increase/decrease got me looking at my old population projection spreadsheet and I realized that it was long overdue for an update. For those interested the result is attached.
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Any comments and/or feedback are appreciated.
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There is a problem with your base population calculation. You are using the percent change over the decade as the growth rate. They are not the same thing. The error is most obvious in the spreadsheet for Florida which shows a base population over 70 million in 1988, when the 1990 census data shows a population of only 9 million.
Since you have the census data, you could just do interpolation to get a much closer estimate for the base populations.