Hmmm..here's a similar page from Google...
http://www-unix.oit.umass.edu/~gcharter/iq.txt
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The income-IQ correlation was inspired by the book "IQ and the Wealth of Nations," by Richard Lynn and Tatu Vanhanen. The income statistics are now perhaps a decade old, but were apparently the only numbers available to the original compiler when the results of the '00 election became available (and this chart was made).