Danielle writes in “Escape from the Central Bank Trap”,the concept of the “Oil Burden”.It is the percentage of global GDP spent on buying oil. It is often said that when the oil burden reaches 5-6% of GDP it can be a cause of a global slowdown.
The global oil burden will rise to 3.1% of global GDP in 2018 from 2.4% in 2017 and -if Brent goes to $80 for an entire year- could soar to 4% of global GDP. This is where things start getting tricky for global economy
https://www.dlacalle.com/en/is-the-oil-burden-a-rising-concern/