According to a recent study by Moody’s Investors Service, Chicago’s pension fund has the most underfunded retirement plans in the country. How underfunded is that? Moody’s says the pensions cost the city 8 times annual revenues.

Based on a three year average calculated by Moody’s Chicago’s pension obligations add up to a total of $29.8 billion. That figure comes to 15.5 percent of its property tax base, making it also the highest in the nation using that parameter.

Chicago came in at the bottom of this list also two years ago, the first year of this Moody’s survey. The office of Mayor Emanuel did not comment on this report.