1901    0.1721
1902    0.9709
1903    0.5537
1904    0.5601
1905    1.3389
1906    0.8430
1907    0.5575
1908    0.3797
1909   -0.3779
1910   -0.4576
1911   -0.5926
1912    0.4162
1913    0.3899
1914   -0.0483
1915    0.4623
1916   -1.1306
1917   -0.8095
1918    0.1619
1919    0.0405
1920   -0.6254
1921   -0.8979
1922   -0.7550
1923    0.0698
1924   -0.5266
1925    0.0043
1926    1.6701
1927    0.0877
1928    0.0857
1929    0.3731
1930    0.3519
1931    1.1228
1932   -0.2245
1933   -1.3024
1934    0.6790
1935    0.3927
1936    1.3323
1937    0.0119
1938    0.0842
1939   -0.0873
1940    1.9107
1941    2.3668
1942    0.6518
1943   -0.1180
1944   -0.5347
1945   -0.2958
1946   -0.2946
1947    0.5349
1948   -0.5930
1949   -1.5273
1950   -1.8647
1951   -0.7348
1952   -1.1520
1953   -0.4095
1954   -0.2168
1955   -1.8721
1956   -1.6267
1957    0.2875
1958    0.7928
1959    0.3512
1960    0.1441
1961   -0.3582
1962   -1.0323
1963   -0.2632
1964   -0.9315
1965   -0.2073
1966   -0.3935
1967   -0.8210
1968   -0.1539
1969   -0.0915
1970   -0.3457
1971   -1.3451
1972   -0.8847
1973   -0.8172
1974   -0.3605
1975   -1.3181
1976   -0.1464
1977    0.3037
1978    0.2243
1979    0.3267
1980    0.5967
1981    0.9846
1982    0.0959
1983    1.3166
1984    0.6707
1985    0.1999
1986    1.1967
1987    1.4882
1988    0.2062
1989   -0.2886
1990   -0.3845
1991   -0.5527
1992    0.9034
1993    1.1006
1994   -0.2998
1995    0.5979
1996    0.6809
1997    1.2992
1998   -0.0354
1999   -1.4487
2000   -0.7885
2001   -0.6386
2002   -0.1378
2003    0.5026
2004   -0.0477
2005   -0.0131
2006    0.0216
2007   -0.4116
2008   -1.2489
2009   -0.5284
2010   -0.5851
2011   -1.5024
2012   -1.1286
2013   -0.7817
2014    0.6998
2015    1.1900
2016    0.9307
2017    0.1601
2018   -0.1762
2019    0.1156
2020   -0.7594
2021   -1.3713
2022   -1.5292
2023   -1.4089
2024   -1.5113