1865.755	-0.240462
1873.015	-0.240462
1877.39	-0.299757
1884.44	-0.360996
1888.815	-0.377521
1896.005	-0.250182
1900.915	-0.221993
1907.52	-0.240462
1912.22	-0.253098
1918.375	-0.160753
1922.845	-0.082017
1929.27	0.0404617
1933.415	0.0890644
1939.635	0.122114
1943.45	0.15322
1949.855	0.0511543
1953.79	0.0385176
1960.29	0.00838396
1964.005	-0.0256379
1970.67	-0.0596598
1974.375	0.0190765
1982.11	0.170717
1984.885	0.237789