Interesting overview.
https://www.axios.com/newsletters/axios-markets-2d98f27f-a92a-477a-9f80-fc821914db99.html
The world's total debt surged by some $9 trillion in the first three quarters of 2019, according to data from the Institute of International Finance, bringing the world's total debt load to $253 trillion, or 322% of its GDP — a record high.
https://www.axios.com/newsletters/axios-markets-2d98f27f-a92a-477a-9f80-fc821914db99.html