1900        .00  
      1901      -.05    
      1902      -.30   
      1903      -.36   
      1904      -.42   
      1905      -.26   
      1906      -.15   
      1907      -.41   
      1908      -.31   
      1909      -.31   
      1910      -.21   
      1911      -.26   
      1912      -.34   
      1913      -.29   
      1914      -.03   
      1915       .06   
      1916      -.21   
      1917      -.46   
      1918      -.33   
      1919      -.10   
      1920      -.15   
      1921      -.05   
      1922      -.10   
      1923      -.16   
      1924      -.11   
      1925      -.16   
      1926       .04   
      1927      -.05  
      1928       .00
      1929      -.22    
      1930      -.03   
      1931       .03  
      1932       .04     
      1933      -.11    
      1934       .05    
      1935      -.08    
      1936       .01    
      1937       .12    
      1938       .15    
      1939      -.02    
      1940       .14    
      1941       .11      
      1942       .10     
      1943       .06    
      1944       .11      
      1945       .00      
      1946       .01      
      1947       .12      
      1948      -.03      
      1949      -.09      
      1950      -.17      
      1951      -.02      
      1952       .04      
      1953       .12      
      1954      -.09      
      1955      -.09      
      1956      -.18      
      1957       .08      
      1958       .10      
      1959       .05      
      1960      -.02      
      1961       .10      
      1962       .05      
      1963       .03      
      1964      -.25      
      1965      -.15      
      1966      -.07      
      1967      -.02      
      1968      -.09      
      1969       .00      
      1970       .04      
      1971      -.10      
      1972      -.05      
      1973       .18      
      1974      -.06      
      1975      -.02       
      1976      -.22     
      1977       .16    
      1978       .07      
      1979       .13      
      1980       .27      
      1981       .40      
      1982       .10      
      1983       .34      
      1984       .16      
      1985       .13      
      1986       .19      
      1987       .35      
      1988       .42      
      1989       .28      
      1990       .49      
      1991       .44      
      1992       .16      
      1993       .19      
      1994       .31      
      1995       .47      
      1996       .36      
      1997       .40      
      1998       .71      
      1999       .44      
      2000       .41      
      2001       .56      
      2002       .70      
      2003       .61     
      2004       .82
      2005       .58
      2006       .79