In the 2015 annual report, What We’ve Learned…and why it matters, we share our research findings about the slowdown in China’s economic growth and its effects on the U.S. economy, emerging market economies, and global commodity markets. Cyclical and structural factors underlie the slowdown. We discuss the impact of trends in exports and investment, and the country’s transformation from a manufacturing-based economy to a service-based economy. We believe China’s days of 10 percent economic growth likely are over.