Year	Millions Of Dollars
1916	1541.00
1917	1304.00
1918	778.000
1919	963.000
1920	829.000
1921	822.000
1922	979.000
1923	1257.00
1924	1232.00
1925	1469.00
1926	1723.00
1927	1589.00
1928	1813.00
1929	2093.00
1930	1334.00
1931	903.000
1932	708.000
1933	657.000
1934	919.000
1935	927.000
1936	1061.00
1937	1212.00
1938	1001.00
1939	1260.00
1940	1478.00