Donald Shoup and Seth Stark

Vehicle ownership increased much faster in the US than in other nations during the 20th century. For every 1,000 persons, the US had 87 vehicles in 1920, 325 vehicles in 1950, and 767 in 1995. Ownership rates in 28 other nations in 1995 are noted in the accompanying graph to correspond with the year in which the US had the same rate. For example, in 1995 Bangladesh had the same vehicle-ownership rate as the US in 1905, Argentina the same as the US in 1925, and Denmark the same as the US in 1956.

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