German surpluses and mounting debt in Europe’s periphery were two sides of the same coin.German surpluses and mounting debt in Europe’s periphery were two sides of the same coin. Germans saved (a lot), and the single currency induced them — rather than save less or invest it at home — to lend it to their eurozone trading partners, which used the money to buy German goods. By 2007, Germany’s trade surplus had reached 195 billion euros, three-fifths of which came from inside the eurozone. Berlin might call this “thrift,” but it’s hard to argue that Germany’s excess savings, which its banks often struggled to put to use, were well invested. Instead, they gave Germans the illusion of prosperity, trading real work (reflected in GDP) for paper IOUs that might never be repaid.