1955  -2.80923  1.17867
1956  -2.2694  1.17667
1957  -2.98405  1.16495
1958  -2.63906  1.1634
1959  -2.82855  1.1632
1960  -1.78791  1.15724
1961  -1.81431  1.1622
1962  -1.29468  1.15728
1963  -1.16075  1.15459
1964  -0.553437  1.14959
1965  -0.166901  1.15246
1966  0.149421  1.15891
1967  -0.965007  1.14978
1968  -1.49114  1.14956
1969  -1.23609  1.14145
1970  -0.627108  1.13696
1971  0.182561  1.13124
1972  -1.10347  1.13667
1973  -0.64791  1.13547
1974  -0.742443  1.14533
1975  0.541739  1.14386
1976  0.314526  1.14066
1977  0.40429  1.13702
1978  0.108055  1.13794
1979  -0.341066  1.13567
1980  1.19661  1.14062
1981  0.664524  1.13218
1982  -0.40973  1.13964
1983  0.354461  1.13094
1984  0.671975  1.13704
1985  1.03234  1.12969
1986  1.7681  1.13201
1987  0.78123  1.13008
1988  1.31016  1.13422
1989  1.75273  1.13629
1990  1.32131  1.12485
1991  1.52665  1.12135
1992  2.83944  1.11707
1993  3.24046  1.11652
1994  3.21888  1.11934
1995  2.23582  1.10871
1996  3.13174  1.10717
1997  3.68612  1.09318
1998  2.1721  1.08346
1999  3.26746  1.08556
2000  2.86984  1.08803
2001  3.72916  1.08559
2002  4.35906  1.05061
2003  5.31571  1.00837
2004  5.49447  0.97467
2005  5.90091  0.9507
2006  6.3092  0.940312
2007  6.10792  0.928098
2008  6.35254  0.916146
2009  6.64943  0.908488
2010  6.89142  0.904981
2011  7.51185  0.903806
2012  7.94583  0.901113
2013  8.79436  0.913368
2014  9.29647  0.914804
2015  9.78916  0.911985
2016  9.62286  0.911728
2017  10.3655  0.908881
2018  10.1262  0.907913
2019  10.8439  0.912652
2020  11.1049  0.913328
2021  11.7783  0.926153
2022  12.0682  0.935548
2023  11.6633  0.936898