Year	Millions Of Dollars
1920	406.800
1921	526.100
1922	583.900
1923	620.000
1924	665.000
1925	694.400
1926	877.900
1927	928.500
1928	1079.60
1929	1059.10
1930	910.000
1931	1030.30
1932	782.200
1933	899.200
1934	705.800
1935	613.800
1936	522.600
1937	493.900
1938	451.900
1939	576.000
1940	602.500
1941	1280.60
1942	1751.20
1943	2666.10
1944	3283.40
1945	2826.10