Year	Millions Of Dollars
1919	64063.0
1920	67242.0
1921	53631.0
1922	57749.0
1923	66929.0
1924	67463.0
1925	71391.0
1926	74300.0
1927	74751.0
1928	76707.0
1929	81066.0
1930	72547.0
1931	60233.0
1932	46718.0
1933	45513.0
1934	52577.0
1935	57300.0
1936	64439.0
1937	69348.0
1938	63658.0