Some economic information I've researched and charted:

US Government Revenue and Expenditures, 1946-2009 (.xlsx)

GDP's of the World's 50 Largest Countries, 2009 (.xlsx)

GDP's of America's Largest Cities, 2008 (.xlsx)

Fortune 500 Largest Companies, 2008 (.xlsx)

City of Detroit Budget, By Department, 2009 (.xlsx)

Donation: