Year	Millions Of Dollars
1919	19163.0
1920	21900.0
1921	11113.0
1922	12164.0
1923	17554.0
1924	14665.0
1925	18360.0
1926	18987.0
1927	17771.0
1928	17336.0
1929	20680.0
1930	13538.0
1931	8792.00
1932	3255.00
1933	3607.00
1934	4595.00
1935	8388.00
1936	12033.0
1937	14079.0
1938	10200.0
1939	14502.0
1940	18895.0
1941	29737.0
1942	48086.0
1943	61768.0