China has been an exporting juggernaut for decades. In the United States, this has meant a dramatic increase in China’s share of imports and a ballooning bilateral trade deficit. Gaining sales in the United States at the expense of other countries, Chinese goods rose from only 2 percent of U.S. non-oil imports in 1990 to 8 percent in 2000 and 17 percent in 2010. But these steady gains in U.S. import share have stopped in recent years, with China even losing ground to other countries in some categories of goods. One explanation for this shift is that Chinese firms now have to directly compete against manufacturers in high-skill developed countries while also fending off competition from lower-wage countries, such as Vietnam. This inability to make additional gains at the expense of other countries means that exports don’t contribute as much to China’s overall growth as they used to.