The 30% mainly consists of four components – capital spending by firms, net exports (exports less imports), residential construction, and government purchases. (Technically, the pace of inventory investment should be included, but this is a cyclical buffer between production and sales rather than a source of final demand.)
其实，这其余30%的表现可圈可点，尤其考虑到70%消费所产生的严重阻力。其余这30%主要包括四个部分：即公司资本支出、净出口（出口减去进口）、住宅建设和政府采购。（技术上还应该包括库存投资的速度，但该指标仅为生产和销售之间的周期性缓冲，而并非最终需求的来源。）