1880    -0.16
1881    -0.08
1882    -0.11
1883    -0.17
1884    -0.28
1885    -0.33
1886    -0.31
1887    -0.36
1888    -0.17
1889    -0.1
1890    -0.35
1891    -0.22
1892    -0.27
1893    -0.31
1894    -0.3
1895    -0.22
1896    -0.11
1897    -0.1
1898    -0.27
1899    -0.17
1900    -0.08
1901    -0.15
1902    -0.28
1903    -0.37
1904    -0.46
1905    -0.26
1906    -0.22
1907    -0.38
1908    -0.42
1909    -0.48
1910    -0.43
1911    -0.43
1912    -0.35
1913    -0.34
1914    -0.15
1915    -0.13
1916    -0.35
1917    -0.46
1918    -0.29
1919    -0.27
1920    -0.27
1921    -0.19
1922    -0.28
1923    -0.26
1924    -0.27
1925    -0.22
1926    -0.1
1927    -0.21
1928    -0.2
1929    -0.36
1930    -0.15
1931    -0.09
1932    -0.16
1933    -0.29
1934    -0.12
1935    -0.2
1936    -0.15
1937    -0.03
1938    0.
1939    -0.02
1940    0.13
1941    0.19
1942    0.07
1943    0.09
1944    0.2
1945    0.09
1946    -0.07
1947    -0.03
1948    -0.11
1949    -0.11
1950    -0.18
1951    -0.07
1952    0.01
1953    0.08
1954    -0.13
1955    -0.14
1956    -0.19
1957    0.05
1958    0.06
1959    0.03
1960    -0.03
1961    0.06
1962    0.03
1963    0.05
1964    -0.2
1965    -0.11
1966    -0.06
1967    -0.02
1968    -0.08
1969    0.05
1970    0.03
1971    -0.08
1972    0.01
1973    0.16
1974    -0.07
1975    -0.01
1976    -0.1
1977    0.18
1978    0.07
1979    0.17
1980    0.26
1981    0.32
1982    0.14
1983    0.31
1984    0.16
1985    0.12
1986    0.18
1987    0.32
1988    0.39
1989    0.27
1990    0.45
1991    0.41
1992    0.22
1993    0.23
1994    0.32
1995    0.45
1996    0.33
1997    0.46
1998    0.61
1999    0.38
2000    0.39
2001    0.53
2002    0.63
2003    0.62
2004    0.53
2005    0.68
2006    0.63
2007    0.66
2008    0.54
2009    0.65
2010    0.72
2011    0.61
2012    0.64
2013    0.67
2014    0.74
2015    0.9
2016    1.02
2017    0.92
2018    0.85
2019    0.98
2020    1.02
2021    0.85