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5880,00.html on this page, there are links to spread sheets with IRS wealth statistics. This page states "An estimated 2.7 million U.S. adults in 2004 had gross assets of $1.5 million or more. . . . . A little less than 1.6 million, or
57.0 percent, of top wealth holders were men, while just under 1.2 million were women. Overall, male top wealth holders had a higher average net worth than their female counterparts."
One of their spreadsheets shows a breakdown, including the figure that there are 47,000 people with total net worth exceeding $20 Million.
How does the IRS arrive at these figures?