In the early 2010s, China's economic growth rate began to slow amid domestic credit troubles, weakening international demand for Chinese exports and fragility in the global economy. China's GDP was slightly larger than Germany's in 2007; however, by 2017, China's $12.2 trillion-economy became larger than those of Germany, UK, France and Italy combined. In 2018, the IMF reiterated its forecast that China will overtake the US in terms of nominal GDP by the year 2030. Economists also expect China's middle class to expand to 600 million people by 2025.