# year    value 
 1900    32767 
 1901    -1.34 
 1902     0.72 
 1903    -1.71 
 1904    -0.76 
 1905       -1 
 1906     0.78 
 1907    -2.02 
 1908    -1.05 
 1909    -1.39 
 1910    -2.01 
 1911    -1.04 
 1912    -0.56 
 1913     -0.2 
 1914    -1.19 
 1915    -0.47 
 1916    -0.35 
 1917    -1.76 
 1918    -1.31 
 1919     0.25 
 1920     0.19 
 1921     -0.8 
 1922    -1.63 
 1923    -1.18 
 1924    -1.35 
 1925    -0.45 
 1926    -0.37 
 1927    -0.93 
 1928       -1 
 1929    -0.95 
 1930    -0.37 
 1931     -1.4 
 1932    -0.25 
 1933    -0.37 
 1934    -0.79 
 1935     0.33 
 1936     0.12 
 1937    -0.49 
 1938    -0.98 
 1939    -0.48 
 1940    -0.09 
 1941    -0.43 
 1942    -0.73 
 1943    -0.33 
 1944    -0.07 
 1945     0.88 
 1946     0.11 
 1947    -0.13 
 1948    -0.43 
 1949        0 
 1950    -0.21 
 1951    -0.19 
 1952     0.42 
 1953     0.29 
 1954    -0.31 
 1955    -0.63 
 1956    -0.93 
 1957     0.34 
 1958     0.19 
 1959    -0.24 
 1960    -0.15 
 1961     0.03 
 1962    -0.07 
 1963     0.13 
 1964    -0.19 
 1965     0.06 
 1966     0.03 
 1967      0.6 
 1968    -0.77 
 1969     0.98 
 1970     0.48 
 1971    -0.59 
 1972        0 
 1973     0.28 
 1974    -0.16 
 1975    -0.05 
 1976     -0.6 
 1977     0.32 
 1978     0.13 
 1979    -0.03 
 1980     0.66 
 1981     0.59 
 1982     0.31 
 1983      1.5 
 1984    -0.04 
 1985     0.32 
 1986     0.25 
 1987     0.74 
 1988     0.26 
 1989    -0.18 
 1990      0.1 
 1991     0.66 
 1992     1.31 
 1993     0.65 
 1994     0.63 
 1995     0.49 
 1996     0.24 
 1997     1.01 
 1998     1.14 
 1999    -0.09 
 2000     0.06 
 2001     0.14 
 2002     0.86 
 2003     0.45 
 2004     0.29 
 2005     0.38 
 2006     0.44 
 2007     0.13 
 2008        0 
 2009     1.11 
 2010     0.93 
 2011     0.33 
 2012        1 
 2013     0.44 
 2014      0.5 
 2015     1.71 
 2016     0.88 
 2017     0.86 
 2018     0.87