CHICAGO — Illinois collected $3.4 billion more in base revenue during fiscal 2011 than the previous year thanks mostly to an income tax hike approved midway through the year and aided by a recovering economy, according to a new report from the state's nonpartisan legislative commission.

The numbers' strength was tempered, however, by the contributions of two one-shots. A tax amnesty program accounted for $392 million of the growth and $354 million came from non-general fund transfers during the fiscal year that ended June 30.

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