Year	Millions Of Dollars
1919	64203.0
1920	74232.0
1921	59412.0
1922	60707.0
1923	71626.0
1924	72095.0
1925	76047.0
1926	81551.0
1927	80051.0
1928	81678.0
1929	87234.0
1930	77319.0
1931	60300.0
1932	42932.0
1933	42183.0
1934	49548.0
1935	54406.0
1936	62864.0
1937	70494.0
1938	65461.0