This is the long-term pattern that we’ve seen: the share of the workforce in goods production has declined over time, while the cost of goods has fallen relative to that of services. In the United States, around 4% of the population in 1950 was employed in agriculture, 38% in industry (including mining, construction, and manufacturing), and 58% in services.
我们已经见证了这个长期模式：商品生产者占劳动者总量的比例不断减少，同时商品成本相对于服务成本也有所下降。在1950年的美国大概4%的人从事农业，38%从事工业（包括采矿，建筑和制造），58%从事服务业。到2010年时上述比例分别转化为约2%，17%和81%。与此同时，医疗和学费成本大幅飙升，其他服务成本也有所上升。