China’s economic roller coaster is taking a bite out of American exporters, hurting U.S. industries ranging from mining equipment to cotton producers. The U.S. shipped just $42.4 billion to China in the first five months of the year, or 8.2% less than the year-earlier period and 13.8% below the peak export year of 2014, The Wall Street Journal reports. The export drop comes as China’s economy, while slowing, is still officially expanding at more than 6% a year. That growth is driven in part by the mountain of goods—worth $174 billion so far this year—the U.S. imports from China. That is quadruple the size of its exports to China during those months, and only slightly less than 2014 levels.