Interesting chart from UBS (via Macrobusiness). Movement between 2002 and 2016 for a number of Developed and Emerging Market (DM and EM) countries in the ratio of bank credit to GDP and bank debt to credit.
The good guys are in the top left corner and the bad guys bottom right.
Australia and China are testing record levels of bank credit to GDP, tracing a similar path to Spain. We all know how that ended.