1948  1.394708
1949  1.294656
1950  2.24564
1951  1.063843
1952  0.210498
1953  0.4950099
1954  -0.624028
1955  1.779224
1956  0.469691
1957  -0.9110826
1958  0.7143361
1959  -1.106359
1960  0.6133862
1961  1.88482
1962  0.2550504
1963  0.3380516
1964  0.3967803
1965  0.2600326
1966  0.03663848
1967  0.3130938
1968  -0.7078371
1969  -1.442529
1970  0.08572914
1971  0.09163499
1972  0.947173
1973  0.7552429
1974  -0.348622
1975  1.053223
1976  -0.02132252
1977  -0.07508814
1978  1.564639
1979  0.1947605
1980  -1.769963
1981  0.3452943
1982  -0.1478054
1983  -1.160978
1984  0.7542886
1985  0.1319966
1986  -1.540685
1987  -1.299494
1988  -0.3586753
1989  -0.1124892
1990  -0.07895057
1991  -1.118577
1992  -1.102074
1993  -1.946162
1994  2.295054
1995  -0.6061013
1996  -0.5493155
1997  0.8717787
1998  -2.172356
1999  0.666012
2000  0.5553812
2001  0.04029345
2002  -0.8135219
2003  -0.9631342
2004  1.195725
2005  -0.2091935
2006  0.03832975
2007  0.3810693
2008  -0.4534031
2009  -1.727999
2010  0.2006664
2011  -0.2632634
2012  0.5023972
2013  0.1855856
2014  -1.377815
2015  -1.67729
2016  0.06438141