1955  -65.5957  16.6126
1956  -55.4609  16.5129
1957  -59.3447  16.392
1958  -26.8145  16.2549
1959  -43.1084  16.4193
1960  -29.0518  16.2442
1961  -18.7744  16.2033
1962  -8.06641  16.1103
1963  -20.502  16.017
1964  -24.4678  15.9265
1965  -20.2266  15.7517
1966  -20.9443  15.6534
1967  -30.6172  15.4814
1968  -44.0977  15.1971
1969  -42.4258  15.2205
1970  -28.6953  15.0576
1971  -10.834  14.6724
1972  -8.23535  14.739
1973  -9.12891  14.7847
1974  -7.14551  15.0003
1975  8.40625  15.086
1976  -2.61035  14.882
1977  -2.92285  14.9286
1978  -9.26953  14.8356
1979  -6.61621  14.637
1980  25.8525  14.4969
1981  35.4043  14.5333
1982  25.9131  14.4229
1983  10.4609  14.4299
1984  27.7627  14.4607
1985  30.6914  14.24
1986  24.9541  14.2641
1987  18.9404  14.1169
1988  38.9854  14.1151
1989  32.4521  14.1884
1990  35.7393  13.8883
1991  51.3213  13.8987
1992  50.1406  13.8291
1993  45.0938  13.7185
1994  47.6943  14.0004
1995  38.0615  13.8235
1996  59.709  13.7939
1997  66.2285  13.8337
1998  61.625  13.7538
1999  78.8613  13.7814
2000  68.5645  13.918
2001  86.3037  14.0177
2002  106.121  13.9832
2003  128.945  13.5017
2004  119.967  12.9282
2005  118.804  12.5154
2006  122.354  12.4384
2007  111.453  12.375
2008  126.783  12.3839
2009  135.385  12.3439
2010  135.443  12.3382
2011  143.5  12.3285
2012  141.627  12.3354
2013  157.171  12.727
2014  159.528  12.7681
2015  173.942  12.6575
2016  165.395  12.6389
2017  185.42  12.68