1880    -0.331506
    1881    -0.239239
    1882    -0.284439
    1883    -0.358331
    1884    -0.460273
    1885    -0.504446
    1886    -0.522559
    1887    -0.577280
    1888    -0.398519
    1889    -0.270399
    1890    -0.513544
    1891    -0.433305
    1892    -0.547778
    1893    -0.492171
    1894    -0.506582
    1895    -0.453463
    1896    -0.345806
    1897    -0.304205
    1898    -0.483756
    1899    -0.350067
    1900    -0.246603
    1901    -0.289555
    1902    -0.473837
    1903    -0.550556
    1904    -0.624580
    1905    -0.422173
    1906    -0.372071
    1907    -0.525522
    1908    -0.492532
    1909    -0.595502
    1910    -0.496506
    1911    -0.575739
    1912    -0.555411
    1913    -0.478020
    1914    -0.271888
    1915    -0.273545
    1916    -0.474791
    1917    -0.580191
    1918    -0.395487
    1919    -0.341522
    1920    -0.287863
    1921    -0.305518
    1922    -0.348421
    1923    -0.325134
    1924    -0.355086
    1925    -0.290276
    1926    -0.163077
    1927    -0.290282
    1928    -0.311505
    1929    -0.455502
    1930    -0.241558
    1931    -0.117717
    1932    -0.201359
    1933    -0.363574
    1934    -0.163697
    1935    -0.259175
    1936    -0.165987
    1937    0.0204935
    1938   -0.0458746
    1939   -0.0815064
    1940    0.0260347
    1941   -0.0288432
    1942   -0.0468618
    1943     0.102134
    1944    0.0919861
    1945   -0.0960564
    1946    -0.135066
    1947   -0.0969085
    1948    -0.190519
    1949    -0.191541
    1950    -0.264165
    1951    -0.122463
    1952   -0.0144202
    1953    0.0207633
    1954    -0.172064
    1955    -0.154676
    1956    -0.237865
    1957   -0.0143729
    1958   -0.0257598
    1959   -0.0454266
    1960   -0.0974500
    1961   -0.0100810
    1962   -0.0829383
    1963   -0.0443432
    1964    -0.303896
    1965    -0.173106
    1966    -0.107391
    1967   -0.0670159
    1968    -0.140814
    1969   -0.0155607
    1970   -0.0420828
    1971    -0.165780
    1972   -0.0695673
    1973    0.0844120
    1974    -0.133970
    1975   -0.0776346
    1976    -0.199416
    1977     0.151909
    1978    0.0328522
    1979    0.0898410
    1980     0.208859
    1981     0.290110
    1982    0.0552383
    1983     0.240415
    1984    0.0665129
    1985    0.0546211
    1986    0.0920980
    1987     0.231567
    1988     0.298728
    1989     0.178121
    1990     0.365650
    1991     0.345702
    1992     0.150372
    1993     0.183468
    1994     0.261035
    1995     0.406279
    1996     0.294614
    1997     0.426848
    1998     0.584126
    1999     0.334214
    2000     0.330555
    2001     0.488250
    2002     0.585796
    2003     0.558168
    2004     0.504261
    2005     0.643620
    2006     0.590444
    2007     0.625562
    2008     0.489712
    2009     0.631027
    2010     0.705796
    2011     0.573198
    2012     0.589318
    2013     0.645079
    2014     0.678090
    2015     0.824649
    2016     0.936895
    2017     0.849087
    2018     0.790717
    2019     0.931715
    2020     0.958741
    2021     0.799400
    2022     0.846118