1955  -12.2585  2.92425
1956  -9.55863  2.91252
1957  -11.0672  2.88326
1958  -6.03433  2.8644
1959  -8.75027  2.88906
1960  -5.74703  2.86344
1961  -3.20847  2.86105
1962  -1.38171  2.84605
1963  -1.93388  2.83322
1964  -3.30193  2.81875
1965  -4.35145  2.78947
1966  -2.54138  2.77472
1967  -5.44519  2.74887
1968  -7.89375  2.70801
1969  -6.50914  2.7046
1970  -5.12989  2.68287
1971  -3.10893  2.63309
1972  -2.40917  2.64565
1973  -1.40197  2.65237
1974  -2.76597  2.68776
1975  0.381756  2.70372
1976  -0.764203  2.67084
1977  0.119495  2.66899
1978  0.166941  2.66097
1979  -0.180435  2.62739
1980  4.63753  2.61252
1981  5.68037  2.61792
1982  3.27473  2.60891
1983  1.25914  2.59519
1984  2.649  2.61371
1985  4.72288  2.58744
1986  5.3442  2.58343
1987  3.84967  2.54796
1988  6.56955  2.55966
1989  6.61676  2.57086
1990  7.05545  2.51303
1991  8.1567  2.51869
1992  9.36441  2.50683
1993  8.3472  2.49397
1994  9.50127  2.52464
1995  6.9422  2.49575
1996  10.7551  2.49986
1997  11.3206  2.49181
1998  9.5542  2.47898
1999  13.2249  2.48224
2000  12.1704  2.49787
2001  15.4325  2.50196
2002  19.9001  2.48002
2003  22.9795  2.39612
2004  21.7894  2.29707
2005  21.7274  2.22101
2006  22.9143  2.18872
2007  20.8356  2.15592
2008  22.9986  2.13401
2009  25.024  2.11004
2010  24.6764  2.10762
2011  25.5524  2.10627
2012  26.5584  2.10119
2013  29.5792  2.14691
2014  30.8332  2.14893
2015  33.094  2.13479
2016  31.6246  2.13456
2017  35.0951  2.13732
2018  35.4182  2.14363
2019  38.2751  2.16038
2020  38.9771  2.17435
2021  41.0218  2.23763
2022  42.9143  2.26456
2023  43.9411  2.26694