See for example the study of Max Duncker: Eine Milliarde Kriegsentschädigung, welche Preußen Frankreich gezahlt hat (1876).
(1 Milliarde = 1 billion).
I estimate that the income level in Prussia was reduced by ca. 50% after the war of 1806/07. A good reason to risk a "war of liberation" in 1813...
Best regards, Thomas