1955  -97.1204  18.7756
1956  -82.1428  18.6614
1957  -92.4046  18.4767
1958  -52.8801  18.3425
1959  -75.4788  18.4927
1960  -47.1809  18.2851
1961  -39.7659  18.2708
1962  -24.5706  18.1608
1963  -34.761  18.0491
1964  -31.2112  17.9282
1965  -23.0432  17.7951
1966  -22.5569  17.755
1967  -40.3274  17.5343
1968  -62.6653  17.2976
1969  -57.2903  17.2787
1970  -36.3352  17.1022
1971  -12.0423  16.7214
1972  -19.8723  16.8246
1973  -11.7034  16.8546
1974  -14.846  17.1034
1975  11.7849  17.1665
1976  4.29466  16.9563
1977  2.56615  16.9884
1978  -5.26198  16.9116
1979  -7.27174  16.7119
1980  38.5808  16.6138
1981  44.116  16.6093
1982  24.0085  16.5542
1983  17.2615  16.4842
1984  37.3093  16.5729
1985  42.4724  16.3358
1986  40.1745  16.3597
1987  25.9646  16.1981
1988  53.363  16.2381
1989  50.7038  16.3098
1990  50.9245  16.1645
1991  68.613  16.1507
1992  80.9783  16.0663
1993  77.741  15.959
1994  81.9939  16.2223
1995  66.9695  16.0133
1996  92.9265  15.9819
1997  105.279  15.955
1998  89.7322  15.8575
1999  114.174  15.8989
2000  100.205  16.0288
2001  129.01  16.1057
2002  155.313  15.9106
2003  189.92  15.255
2004  181.8  14.5769
2005  187.665  14.071
2006  194.461  13.9657
2007  181.051  13.8799
2008  201.182  13.8617
2009  212.921  13.8079
2010  217.382  13.7769
2011  230.556  13.7561
2012  233.141  13.7532
2013  258.97  14.1986
2014  267.557  14.2422
2015  286.961  14.1221
2016  277.304  14.0947
2017  303.907  14.1315