The following is a list of five of the world's busiest airports by passenger traffic for 2010. 
How many more millions of passengers flew out of Atlanta than flew out of Chicago?
Definitions:
Net Income
The total earnings of a company after subtracting all expenses from its total revenue, representing the profit or loss in a financial period.
Stockholders' Equity
The residual interest in the assets of a corporation after deducting its liabilities.
Account Balances
The amount of money in an account at any given time, which can reflect credits and debits from transactions.
Reacquired Shares
Stocks that were issued and subsequently bought back by the issuing company, reducing the number of shares outstanding on the open market.
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