Year annual % 1961 -0.13031457076454947 1962 0.36496663685535596 1963 0.5362680001045907 1964 0.587725304642335 1965 0.1794522651277578 1966 -0.057378466510216705 1967 0.14993356273915395 1968 0.13829688258128386 1969 -0.04284878155560447 1970 -0.47420217471227405 1971 -0.7764284496607403 1972 -0.5689319224094107 1973 -0.5007703674958661 1974 -0.46702865995901266 1975 -0.4516332423659878 1976 -0.4640903942355849 1977 -0.5127989708256323 1978 -0.7023943736753995 1979 -0.3545520807559785 1980 0.03492097471311944 1981 0.013968999506708605 1982 0.02075206357217045 1983 0.03243700577969089 1984 -0.0089276737839061 1985 -0.11336093065624382 1986 -0.24184502425782925 1987 -0.3622238680926691 1988 -0.5231997038969073 1989 -0.10661736109227542 1990 0.27627665696303844 1991 0.23842333385306652 1992 0.19287880631710483 1993 0.13792329243874787 1994 0.09435365839637141 1995 0.021520605120270705 1996 -0.04085810694693487 1997 -0.0516096550797515 1998 -0.07884282167665416 1999 -0.12564222651053064 2000 -1.1591989240036464 2001 -0.14520057745324774 2002 -0.11433693407684764 2003 0.22256048128749387 2004 0.23330994218183107 2005 0.2470215445791477 2006 0.2241637643071428 2007 0.23498936494563208 2008 0.30466970159282514 2009 0.3553855701072882 2010 0.0011897010204226168 2011 0.33974860388434136 2012 0.32051131573670383 2013 0.25682899074873683 2014 0.24386740998470452 2015 0.2485430338784332 2016 0.20844505309963432 2017 0.19562943824702117 2018 0.11754101204151993 2019 0.028134459433427992 2020 -0.19008120193021188 2021 -0.48184585978269234 2022 -2.629948916213044 2023 -0.5806862470753734