Year	Billions Of Dollars
1919	1.32300
1920	1.81800
1921	1.41200
1922	1.25600
1923	1.79200
1924	1.53000
1925	1.40800
1926	1.64800
1927	1.47600
1928	1.30400
1929	1.33700
1930	1.14900
1931	0.820000
1932	0.556000
1933	0.570000
1934	0.761000
1935	0.805000
1936	0.940000
1937	1.06700
1938	0.851000