Interest rate?

After a dozen or so games, I had a random event popup that altered the "interest rate" for my civ. I haven't been able to find out anything about this bonus/penalty. Anyone have any ideas?
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Reply #1 Top
AFAIK it simply means your Economy bonus.
Reply #2 Top
That was my first guess but when I went to the civilization manager there was new entry for "Interest Rate" seperate from Economy.