1948   -0.75
1949    0.29
1950    0.49
1951    1.46
1952    1.11
1953   -0.66
1954    0.34
1955    1.06
1956    1.55
1957    0.32
1958   -0.57
1959    0.52
1960   -0.02
1961   -1.11
1962    0.63
1963   -1.00
1964   -0.11
1965    0.13
1966    1.09
1967    0.78
1968   -0.32
1969    0.76
1970   -1.84
1971    1.15
1972    1.32
1973    0.19
1974   -0.25
1975    0.40
1976    0.41
1977   -1.71
1978   -1.58
1979    0.60
1980   -0.77
1981   -2.52
1982    0.68
1983   -2.90
1984   -1.57
1985    0.49
1986   -2.26
1987   -1.47
1988   -0.40
1989    1.27
1990    0.85
1991    0.91
1992   -1.23
1993   -0.27
1994    0.55
1995   -0.38
1996   -0.93
1997   -0.51
1998   -1.69
1999    0.24
2000   -0.36
2001   -1.15
2002    0.05
2003   -2.02
2004   -0.22
2005   -0.57
2006    0.51
2007    0.37
2008    0.13
2009    2.14
2010   -1.16
2011    1.06
2012    0.75
2013    0.84
2014    0.52
2015   -0.65
2016   -1.14
2017    0.54
2018    1.95
2019    0.21
2020    1.53
2021    0.98
2022    0.51
2023    1.30
2024    0.06