Year	Millions Of Dollars
1918	3649.30
1919	3856.60
1920	4174.50
1921	3947.10
1922	3988.00
1923	4395.30
1924	4420.80
1925	4735.70
1926	5065.20
1927	5274.90
1928	5571.30
1929	5821.10
1930	5925.70
1931	5112.10
1932	4289.70
1933	3578.20
1934	3891.60