Global debt has piled up at an unprecedented pace since 2016, increasing by over $52tn vs a $6tn rise over 2012-16; Less bang for the buck: the capacity of debt to generate growth is diminishing, and investment remains subdued; EM governments face increasing interest burdens, notably in Turkey, India, South Africa, and the Philippines; Small businesses have seen a much bigger increase in debt-to-revenue ratios than have larger firms.