James and Rosanna Letwin have given a total of $93 million to the Wilburforce Foundation, U.S. tax returns say. Of that, $60 million was in Microsoft shares while $33 million was cash. Gordon Letwin is one of the original founders of Microsoft.
As shown below, during 2000 - 2002, no contributions from the Letwins were reported.
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For a larger version of the excerpt of tax returns on which the above table and figure are based, click on the image itself, below.
For 2010:
