year,region,value
1895,east,-1.381666667
1895,west,-10.54333333
1896,east,-1.938787879
1896,west,-10.55393939
1897,east,-1.948636364
1897,west,-11.39181818
1898,east,-2.344848485
1898,west,-12.1569697
1899,east,-2.490151515
1899,west,-12.39757576
1900,east,-1.924545455
1900,west,-12.07545455
1901,east,-1.590909091
1901,west,-11.25909091
1902,east,-3.441818182
1902,west,-11.15727273
1903,east,-4.093636364
1903,west,-12.61909091
1904,east,-4.838181818
1904,west,-12.20727273
1905,east,-4.981818182
1905,west,-11.51818182
1906,east,-5.059090909
1906,west,-13.25181818
1907,east,-4.504545455
1907,west,-13.57363636
1908,east,-5.262727273
1908,west,-13.02545455
1909,east,-4.665454545
1909,west,-11.88727273
1910,east,-4.952727273
1910,west,-11.65636364
1911,east,-6.120909091
1911,west,-13.33
1912,east,-6.768181818
1912,west,-14.25818182
1913,east,-5.484545455
1913,west,-14.33272727
1914,east,-4.288181818
1914,west,-13.63636364
1915,east,-4.007272727
1915,west,-13.86090909
1916,east,-3.359090909
1916,west,-14.18727273
1917,east,-2.521818182
1917,west,-12.54272727
1918,east,-3.244545455
1918,west,-11.34818182
1919,east,-2.793636364
1919,west,-11.47818182
1920,east,-3.77
1920,west,-10.73636364
1921,east,-4.057272727
1921,west,-9.374545455
1922,east,-3.020909091
1922,west,-7.536363636
1923,east,-2.245454545
1923,west,-6.150909091
1924,east,-2.135454545
1924,west,-6.562727273
1925,east,-3.085454545
1925,west,-5.996363636
1926,east,-1.94
1926,west,-4.838181818
1927,east,-2.283636364
1927,west,-4.166363636
1928,east,-2.482727273
1928,west,-4.136363636
1929,east,-1.792727273
1929,west,-3.482727273
1930,east,-1.62
1930,west,-2.742727273
1931,east,-0.559090909
1931,west,-2.387272727
1932,east,-0.179090909
1932,west,-2.050909091
1933,east,-0.274545455
1933,west,-1.212727273
1934,east,0.44
1934,west,-0.825454545
1935,east,-0.095454545
1935,west,2.318181818
1936,east,1.072727273
1936,west,3.499090909
1937,east,-0.23
1937,west,3.058181818
1938,east,-0.837272727
1938,west,3.082727273
1939,east,-1.600909091
1939,west,3.487272727
1940,east,-1.728181818
1940,west,1.622727273
1941,east,-1.024545455
1941,west,1.534545455
1942,east,-1.686363636
1942,west,1.188181818
1943,east,-0.59
1943,west,0.157272727
1944,east,-0.618181818
1944,west,-0.741818182
1945,east,-0.899090909
1945,west,-1.886363636
1946,east,-0.597272727
1946,west,-4.443636364
1947,east,-1.738181818
1947,west,-5.320909091
1948,east,-1.34
1948,west,-5.458181818
1949,east,-0.893636364
1949,west,-5.615454545
1950,east,-0.698181818
1950,west,-6.387272727
1951,east,-1.029090909
1951,west,-5.103636364
1952,east,-1.704545455
1952,west,-4.000909091
1953,east,-1.201818182
1953,west,-3.524545455
1954,east,-2.016363636
1954,west,-3.296363636
1955,east,-2.169090909
1955,west,-3.18
1956,east,-2.308181818
1956,west,-2.34
1957,east,-1.913636364
1957,west,-1.585454545
1958,east,-1.933636364
1958,west,0.04
1959,east,-2.350909091
1959,west,-0.298181818
1960,east,-2.140909091
1960,west,-0.506363636
1961,east,-3.646363636
1961,west,0.072727273
1962,east,-3.552727273
1962,west,0.368181818
1963,east,-3.758181818
1963,west,-0.441818182
1964,east,-3.866363636
1964,west,-1.205454545
1965,east,-3.693636364
1965,west,-1.819090909
1966,east,-3.447272727
1966,west,-2.593636364
1967,east,-3.029090909
1967,west,-2.689090909
1968,east,-2.760909091
1968,west,-2.993636364
1969,east,-3.582727273
1969,west,-4.785454545
1970,east,-2.940909091
1970,west,-4.556363636
1971,east,-3.571818182
1971,west,-4.242727273
1972,east,-2.000909091
1972,west,-3.804545455
1973,east,-1.313636364
1973,west,-4.414545455
1974,east,-1.195454545
1974,west,-3.293636364
1975,east,-1.566363636
1975,west,-2.442727273
1976,east,-1.804545455
1976,west,-1.081818182
1977,east,-2.103636364
1977,west,0.011818182
1978,east,-2.854545455
1978,west,0.37
1979,east,-3.339090909
1979,west,0.832727273
1980,east,-1.336363636
1980,west,0.651818182
1981,east,-1.219090909
1981,west,1.812727273
1982,east,-0.372727273
1982,west,3.095454545
1983,east,-0.919090909
1983,west,3.734545455
1984,east,-2.286363636
1984,west,4.641818182
1985,east,-1.481818182
1985,west,4.837272727
1986,east,-0.785454545
1986,west,4.734545455
1987,east,-0.697272727
1987,west,4.775454545
1988,east,-1.200909091
1988,west,5.523636364
1989,east,0.589090909
1989,west,6.655454545
1990,east,0.842727273
1990,west,6.950909091
1991,east,-0.184545455
1991,west,7.992727273
1992,east,-0.264545455
1992,west,8.964545455
1993,east,1.576363636
1993,west,9.450909091
1994,east,2.570909091
1994,west,8.445454545
1995,east,3.795454545
1995,west,8.163636364
1996,east,3.753636364
1996,west,8.263636364
1997,east,3.637272727
1997,west,8.260909091
1998,east,4.422727273
1998,west,8.330909091
1999,east,5.846363636
1999,west,9.068181818
2000,east,5.656363636
2000,west,9.320909091
2001,east,5.954545455
2001,west,9.644545455
2002,east,7.176363636
2002,west,9.831818182
2003,east,7.37
2003,west,8.767272727
2004,east,6.259090909
2004,west,8.300909091
2005,east,6.53
2005,west,9.185454545
2006,east,7.231818182
2006,west,9.395454545
2007,east,8.036363636
2007,west,9.580909091
2008,east,8.046363636
2008,west,9.950909091
2009,east,7.687272727
2009,west,10.81454545
2010,east,8.118181818
2010,west,12.14181818
2011,east,9.195454545
2011,west,13.08272727
2012,east,10.55909091
2012,west,13.59636364
2013,east,10.04727273
2013,west,14.68545455
2014,east,10.54363636
2014,west,14.97090909
2015,east,9.713636364
2015,west,15.00727273
2016,east,9.825454545
2016,west,15.49545455
2017,east,9.232727273
2017,west,16.21818182
2018,east,9.005454545
2018,west,17.10909091
2019,east,9.513484848
2019,west,17.46545455
2020,east,9.867878788
2020,west,17.16636364
2021,east,9.157727273
2021,west,15.80090909
2022,east,7.956666667
2022,west,14.66909091
2023,east,6.818333333
2023,west,14.85