An increase in retail spendings indicates sound consumer health and rising transaction volumes for payment network providers such as MasterCard and competitors like Visa, American Express, Discover and Capital One.

FORBES: Mastercard Stock Rides Retail Rebound To New Highs

But the report had not mentioned any action to increase the effectiveness of the existing sound barrier.

BBC: Gloucester estate residents complain about M5 noise

That may not sound much of an increase, but over that period total global consumption will grow spectacularly.

ECONOMIST: An unconventional bonanza