I meant the individual income. The article by Duncker is exactly about the relation between the two reparation sums: Prussia (ca. 5 Mio. inhabitants after the peace of Tilsit) had to pay in total ca. 1 billion (= 1 Milliarde) francs war reparation (inkl. other taxes / sums) to France in the years after 1807. France (I guess 30-40 Mio. inhabitants??, the economy much more developped than in 1807) had to pay 5 billion francs to Germany after the war of 1870/71.
The excessive reparation (of 1807) and its consequence - individual and state impoverishment - was surely one of the main causes of Prussia's change of front in 1813. Of course I am aware that the impoverishment was also driven by the contintal blockade and other measures of N. For instance one can consider the loads of the Prussian state and population during the year 1812. Cf. for example:
Schmidt, J. T., Ostpreußens Schicksale im Jahre 1812 während des Krieges zwischen Frankreich und Rußland. In: Beiträge zur Kunde Preußens, Jg. 1825 (7. Bd.), S. 1-51, 97-149, 185-258, 279-335, 367-414 ( http://books.google.de/books?id=LNoAAAAAcAAJ&pg=PA1 )
Best regards, Thomas