CHICAGO — With efforts to fix Illinois' woefully underfunded pension system still in limbo, the largest of the state's five funds reported its unfunded obligations rose in fiscal 2013 to $55.7 billion from $52.1 billion a year earlier despite double-digit investment returns.

The Teachers Retirement System's fiscal 2012 unfunded liability represented more than half of the state's $95 of unfunded obligation for fiscal 2012. The numbers reflect actuarial smoothing. The other four funds cover state employees, lawmakers, judges, and public university employees.

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