The economics of petroleum . /y ^^^^ / / / / ^^ .<f Sv o/ f & ^^*4 3G 2015 TO / CO nsumed. <^^ / / / / INCREASE ORDECREASE+ 100;^+ 80+ 6040J+ 20 O10 ]- 20J- 3040J- 50 19l!l 1912 1913 1914 1915 1916 1917 1918 1919 1920 192) Fig. 57.—Trend of supply and demand for gasoline in the United States, 1910-1920. 59 these factors are employed for 1920, while the factors given inTable 51 are used in calculating the preceding years, thus allowingfor the shifting currents in the situation. DISTRIBUTION OF THE GASOLINE DEMAND 125 Fig. 58 gives the data of Fig. 57 plotted so as to show the growingimpor
The economics of petroleum . /y ^^^^ / / / / ^^ .<f Sv o/ f & ^^*4 3G 2015 TO / CO nsumed. <^^ / / / / INCREASE ORDECREASE+ 100;^+ 80+ 6040J+ 20 O10 ]- 20J- 3040J- 50 19l!l 1912 1913 1914 1915 1916 1917 1918 1919 1920 192) Fig. 57.—Trend of supply and demand for gasoline in the United States, 1910-1920. 59 these factors are employed for 1920, while the factors given inTable 51 are used in calculating the preceding years, thus allowingfor the shifting currents in the situation. DISTRIBUTION OF THE GASOLINE DEMAND 125 Fig. 58 gives the data of Fig. 57 plotted so as to show the growingimportance of trucks and tractors as consumers of motor-fuel. Thedemand chart may be seen to be made up of two fairly constantcomponents, exports and miscellaneous, and three widening wedges,cars, trucks, and tractors. The wedges representing truck and tractorconsumption, it should be observed, are in a relatively youthful stageas compared with the wedge representing the consumption of pas-. 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 Fig. 58.—Analysis of the growth in the demand for gasoline in the United States, 1910-1920. senger cars. The same range of data, recalculated to a percentagebasis, is presented in Fig. 59 as a matter of further comparison. Distribution of the Gasoline Demand.—The geographical distri-bution of the requirements for gasoline may be calculated withapproximate acciuacy from automotive registrations, and the resultsmay be used effectively by marketing companies as a guide to salesdevelopment. Since the number of cars and trucks in each town andcounty in the country is known, the calculation of the demand iseasily made by means of the consumption factors just given, modifiedto meet local conditions. 126 GASOLINE Consumption factors for fourteen states of various types anddiverse locations are given in Table 52, which at the same time illus-trates the method of calculation. Table 52.—The Consumption of Gasoline in 1920 in Selected S
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