Right now, Mr. Dixon says his fund is earning a yield of 7% on his rental portfolio after accounting for operating expenses.

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The biggest winners over a five-year period are material management directors, who are earning 18% more this year than in 2007, and accounting directors, whose paychecks have grown 17.8% in the same period.

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Of the 26 jobs included in the survey, only four--national sales managers, accounting directors, marketing directors, and systems and programming managers--are earning less in 2010 than last year.

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Tech and pharma generally, have been earning strong profits over the last two decades, even though they have very little capital according to traditional accounting.

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