Year	Millions Of Dollars
1916	55.0000
1917	69.8000
1918	65.4000
1919	123.300
1920	145.500
1921	104.900
1922	148.400
1923	188.400
1924	202.200
1925	246.400
1926	261.000
1927	244.500
1928	254.200
1929	314.400
1930	234.200
1931	117.900
1932	64.4000
1933	61.0000
1934	107.800
1935	127.400
1936	198.600
1937	202.400
1938	149.700
1939	164.100
1940	182.700