Year	Millions Of Dollars
1920	3087.50
1921	2472.80
1922	2488.10
1923	2762.70
1924	2772.50
1925	3017.60
1926	3178.30
1927	3108.60
1928	3202.80
1929	3535.00
1930	3272.10
1931	2739.80
1932	2371.40
1933	2545.20
1934	2790.40
1935	2926.90
1936	3221.40
1937	3781.80
1938	3371.50
1939	3387.90
1940	3560.50
1941	4205.70
1942	4624.60
1943	4741.50
1944	4668.40
1945	4561.60