To quote statistician, Hans Rosling from his 2018 New York Times Best Seller:

“If the UN forecasts for Population growth are correct, and if incomes in Asia and Africa keep growing as now, then the center of gravity of the world market will shift over the next 20 years from the Atlantic to the Indian Ocean. Today, the people living in rich countries around the North Atlantic, who represent 11 percent of the world population, make up 60 percent of the Level 4 consumer market. Already by 2027, if incomes keep growing worldwide as they are doing now, then that figure will have shrunk to 50 percent. By 2040, 60 percent of Level 4 consumers will live outside the West.”