The balance sheet of Gross economy of the world is studied w.r.t. many influential heads. However, the subject discussion may be studied w.r.t. countries or economic sectors alone.
It will take a longer time, globally about 10 years, to fully identify the economic growth engine of the 21st century (2 pdf attached). My informed guess for the statistical post mortems of 2019, concerning economic productivity, is that we will see overall a lot of stagnation, because disruptive technologies cause real problems for new job creation. Exponentiality is speedy and 'creative destruction' spreads in the next few years, until the curve function 'calms' down.
Thanks for replies - You are really fantastic humans... I pray for You permanently sincerely. Now I am working on wonderful competitive price paradoxes in world with the laws of physics in economics and will inform You soon+ It’s my new work on World outlook 2018: Book Optimistic Growth of the World Economy toward 2019 and What ...