Growth has slowed in China, for example, which has made up nearly 30% of GDP growth among 20 major economies, including the U.S., over the past 50 years.
FEWER NEW WORKERS
Women’s participation in the workforce is approaching parity with men’s, making it tough to boost GDP growth via new workers.
NEGATIVE INTEREST RATES
To stave off deflation, governments are setting negative interest rates on bonds, meaning people who invest today will get less than they put in when the bonds mature.
TAXES AND WAGES
Taxes are expected to rise globally, as are wages (thanks to falling unemployment). Both trends put increased pressure on corporate profits.
This appears in the May 30, 2016 issue of TIME.