The stock trades at 21 times its adjusted funds from operations (net plus depreciation minus maintenance-level capital outlays).

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To get a handle on who might be next, compare dividend checks to adjusted funds from operations (AFFO), a measure of real estate's cash-generating ability.

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Over five years Simon Property Group, the largest mall REIT, has booked a respectable 7.5% average increase in earnings--in REIT parlance called "adjusted funds from operations, " or AFFO.

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