How global debt has changed since the financial crisis

``The total stock of global debt, even excluding debts held by the financial sector, is up by more than $50 trillion. That's an increase of more than 50%.... the main increase has been down to non-financial corporate debt, which has risen by 63% over the period, largely in emerging markets. Recent analysis by Australian investment bank Macquarie shows an astonishing leap in debt among Chinese commodity companies over the last 7 years.''