1919   7.98000                         
1920   7.45000                         
1921   2.56000                         
1922   4.12000                         
1923   8.40000                         
1924   5.64000                         
1925   9.09000                         
1926   9.00000                         
1927   8.23000                         
1928   7.67000                         
1929   10.4900                         
1930   4.20000                         
1931   0.160000                        
1932   -5.68000                        
1933   -5.18000                        
1934   -4.22000                        
1935   0.330000                        
1936   4.27000                         
1937   5.01000                         
1938   1.04000                         
1939   5.18000