I don't think you can draw any significant conclusions about each country's financial conservativeness based on this data alone. For instance, note that the BR

I don't think you can draw any significant conclusions about each country's financial conservativeness based on this data alone. For instance, note that the BRIC's household debt is very low compared to the developed countries. It might just be the case that the real interest rates in wealthy countries are lower, so it's not necessarily a bad idea to have debt there.