ECONOMICS OF THE FISHERIES 



389 



60 



50 «5 



40 



30 



20 



100 

 90 5 



60 o 



50 



40 



1920 



1922 



1924 



1926 



1928 



1930 



1932 



1934 



1936 1938 1940 



Fig. II. Money value of United States food fish, and Canadian total fish products, and 

 United States national income, 1921-1940. Heavy lines, dollars. United States and Canadian, 

 respectively, of current purchasing power each year; light lines, dollars of constant purchasing 

 power in terms of U. S. and Canadian, respectively, All Commodity Wholesale Price Indices, 

 1926 = 100. (Price indices, U. S. Bureau of Labor Statistics and Dominion Bureau of Statistics; 

 U. S. National Income, U. S. Dept. of Agric). See text for explanation. The coefiicient of cor- 

 relation of the United States value of food fish and the national income is r = + 0.94. 



