Year	Billions Of Dollars
1919	0.865000
1920	1.10100
1921	1.25000
1922	1.34000
1923	1.57500
1924	1.80200
1925	1.99000
1926	2.22600
1927	2.34100
1928	2.38300
1929	2.51200
1930	2.48800
1931	2.21900
1932	1.86400
1933	1.53900
1934	1.36000
1935	1.37100
1936	1.52000
1937	1.70000
1938	1.60000