year/1991 1991/year Growth%
1981 0.911285 1.097352 0.9031%
This means a 1991 statistic would have to be shrunk to about 91% of its size to be relevant to a comparable 1981 statistic.
On the other hand, and 1981 statistic would have to be enlarged, this time by about 10% to be useful in comparison to 1991.
1991 is the latest year for which we have "hard statistics" so a copy of that year is presented first for you immediate use, with year back to colonization following, starting with estimates for 2009 when the United States population should reach 300 million.
You may note some fluctuations in these figures, because we used all reports from the major media and almanacs of the periods our researchers could find. If you have access to any figures which do not appear in the footnoted materials, please send them to us for inclusion in the next edition.
We are also working on a database that will NOT show fluctuation patterns of this nature, which will be based on massaged figures presented at later dates by the Census Bureau. These will be an example of the difference between the figure we can expect on an entirely "here-and-now" basis, and those which we would probably not see about today's events until a decade or two have passed.