Year	Current Prices
1919	3508.10
1920	4777.10
1921	2956.70
1922	3568.90
1923	4647.30
1924	4465.30
1925	4950.40
1926	5111.50
1927	4845.20
1928	4793.80
1929	5007.50
1930	3779.80
1931	2552.10
1932	1362.70
1933	1536.10
1934	1909.90
1935	2375.00
1936	3331.50
1937	3945.80
1938	3159.00
1939	3701.60