Related Question on Metaculus:

What will be the Gross World Product (in trillions of 2020 USD) in the following years?
What will be the largest real Gross World Product for the period 2020 through 1,000,002,200, in trillions of 2020 US$?

In Modeling the Human Trajectory, David Roodman introduces an internally consistent statistical model of world economic history. It casts a Gross World Product (GWP) series as a sample path whose specification is a stochastic calculus-based growth model.

Their univariate fit implies that, conditional on the 2019 GWP, explosion to infinity is essentially inevitable. It finds a median explosion date of 2047.

As of 2018, GWP was $82 trillion in 2010 US$.

What will real Gross World Product be in 2200, in trillions of 2020 US$?

Based on 33 predictions by 12 forecasters