Phoenix Sky Harbor directly contributed $28.7 billion to Arizona's economy in 2011, a study said.
That's an average of $78 million per day.
"The Phoenix Airport system is an economic engine that not only generates employment, but benefits local businesses and is integral to the multi-billion dollar tourism industry," said Phoenix Mayor Greg Stanton in a release.
The airport system employs about 250,000 jobs with a total payroll of about $10 billion.
Each day, the airport sees an average of 111,000 passengers and 828 tons of cargo.
In 2007, Sky harbor contributed $33 billion to the state's economy.
The study was conducted by Arizona State University's W.P. Carey School of Business.
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