1955  -2.79286  1.1732
1956  -2.33992  1.16932
1957  -2.98991  1.15159
1958  -2.37271  1.14949
1959  -2.98455  1.14927
1960  -1.64863  1.14153
1961  -1.8607  1.14627
1962  -1.60965  1.14018
1963  -1.39209  1.13637
1964  -0.640476  1.12692
1965  -0.32475  1.13176
1966  -0.163341  1.14204
1967  -0.917339  1.12876
1968  -1.78328  1.12925
1969  -1.47405  1.11977
1970  -0.796044  1.11323
1971  -0.312412  1.10628
1972  -1.16106  1.11398
1973  -0.286543  1.11153
1974  -0.737751  1.12259
1975  0.354266  1.12073
1976  0.741696  1.1162
1977  0.639415  1.11248
1978  0.467277  1.11415
1979  -0.125611  1.11106
1980  1.30252  1.11652
1981  0.83313  1.10636
1982  -0.138903  1.11611
1983  0.660038  1.10257
1984  0.921345  1.11341
1985  1.1423  1.10411
1986  1.46345  1.10566
1987  0.704205  1.10092
1988  1.35854  1.10944
1989  1.74043  1.11208
1990  1.39538  1.12978
1991  1.59154  1.12656
1992  2.68457  1.12226
1993  2.86011  1.12111
1994  3.0351  1.12423
1995  2.60667  1.11511
1996  2.99261  1.11313
1997  3.51135  1.10045
1998  2.45509  1.09318
1999  3.09012  1.09642
2000  2.69452  1.09901
2001  3.77098  1.1003
2002  4.49291  1.07267
2003  5.50822  1.03575
2004  5.66736  1.00828
2005  6.19355  0.98822
2006  6.31801  0.984128
2007  6.25161  0.979397
2008  6.57324  0.973633
2009  6.8076  0.971003
2010  7.2203  0.966395
2011  7.68653  0.965108
2012  8.05632  0.963653
2013  8.9058  0.979203
2014  9.57552  0.981833
2015  10.0482  0.979283
2016  9.86484  0.976988
2017  10.3832  0.943453
2018  9.64371  0.990321