You mention Brakman and van Marrewijk. According to them, 132 billion amounted to the astonishing sum of 6,600 million pounds to be paid at a rate of 2 billion marks annually, which was 25% of exports, and was supposed to continue until 1988. In assessing relativity, consider that Frankfurt payments lasted for 3 years while Versailles payments were supposed to keep going for more than 60 years. For Germany to have paid off its reparations over 3 years would have involved 500% of annual exports and more than 100% of GDP compared to Frankfurt's 5.6% .
"... They ne'er cared for us
yet: suffer us to famish, and their store-houses
crammed with grain; make edicts for usury, to
support usurers; repeal daily any wholesome act
established against the rich, and provide more
piercing statutes daily, to chain up and restrain
the poor. If the wars eat us not up, they will; and
there's all the love they bear us."
-- Shakespeare: Coriolanus, Act 1, scene 1