1901   -0.1028
1902    0.5881
1903    0.1753
1904    0.0734
1905    0.8767
1906    0.2807
1907    0.1845
1908    0.1836
1909   -0.4413
1910   -0.5653
1911   -0.4593
1912    0.2845
1913    0.1822
1914   -0.1737
1915    0.3088
1916   -1.1864
1917   -0.9351
1918    0.1156
1919   -0.0984
1920   -0.6900
1921   -0.9506
1922   -0.5467
1923    0.1408
1924   -0.5410
1925   -0.1447
1926    1.6565
1927    0.2695
1928    0.1560
1929    0.5012
1930    0.4578
1931    1.1307
1932   -0.4040
1933   -1.5174
1934    0.7287
1935    0.5237
1936    1.5549
1937    0.0413
1938    0.1981
1939   -0.3432
1940    1.7148
1941    2.3131
1942    0.5221
1943   -0.0272
1944   -0.5000
1945   -0.2341
1946   -0.2546
1947    0.0803
1948   -0.8090
1949   -1.4037
1950   -1.6916
1951   -0.5596
1952   -1.1526
1953   -0.4412
1954   -0.0633
1955   -1.8641
1956   -1.5221
1957    0.4002
1958    1.0287
1959    0.6387
1960    0.2502
1961   -0.3640
1962   -1.0888
1963   -0.3280
1964   -0.7568
1965   -0.1733
1966   -0.2616
1967   -0.5279
1968   -0.0144
1969   -0.1770
1970   -0.2688
1971   -1.3002
1972   -1.0280
1973   -0.8555
1974   -0.1682
1975   -1.1850
1976   -0.1349
1977    0.2980
1978    0.3007
1979    0.3599
1980    0.5412
1981    1.0472
1982    0.0073
1983    1.3785
1984    0.8305
1985    0.2872
1986    1.2449
1987    1.3450
1988    0.3367
1989   -0.1253
1990   -0.3137
1991   -0.4565
1992    0.9694
1993    1.1967
1994   -0.0911
1995    0.6763
1996    0.8716
1997    1.5275
1998    0.1772
1999   -1.2129
2000   -0.5021
2001   -0.5632
2002   -0.0833
2003    0.5993
2004    0.2471
2005    0.2945
2006    0.0585
2007   -0.1606
2008   -0.9790
2009   -0.4662
2010   -0.6209
2011   -1.4458
2012   -1.2326
2013   -0.6036
2014    1.1313
2015    1.5746
2016    1.3134
2017    0.5380
2018    0.2309
2019    0.6504
2020   -0.2597
2021   -1.0294