Year	annual %
1961	-0.160042500915763
1962	0.395694490537776
1963	0.477058972393582
1964	0.58890323959932
1965	0.528566072575263
1966	0.425318535206866
1967	0.323870353038585
1968	0.237687869340698
1969	0.204663761578724
1970	-0.38987323824066
1971	-0.317563701077064
1972	0.414503219518839
1973	0.552141691663197
1974	0.664900387723116
1975	0.699965181580971
1976	0.667037110958035
1977	0.59879976253946
1978	0.541813437966295
1979	0.489354496250338
1980	0.115087337589653
1981	-0.034962754636898
1982	0.138100551275644
1983	0.087505593392119
1984	0.0615568796708922
1985	0.0668204351778328
1986	0.0494116240523893
1987	0.049213263053871
1988	0.0768792586277848
1989	0.055917203835936
1990	-0.267830773210837
1991	-0.240064841789636
1992	0.102241165106867
1993	0.103947042476644
1994	0.0361217655856125
1995	-0.0613140627238111
1996	-0.11638129923463
1997	-0.107762749274352
1998	-0.0947447516571582
1999	-0.102175934295454
2000	-0.280414108078884
2001	-0.375719704335905
2002	-0.192901617564167
2003	-0.028620590719166
2004	0.0304348483027166
2005	0.138325980046718
2006	0.270795629232185
2007	0.583542205385113
2008	0.829412602993033
2009	0.569729451418061
2010	0.29136167418042
2011	0.206747667335417
2012	0.139925655740972
2013	0.0331699460503076
2014	0.105277581527518
2015	0.196588748472653
2016	0.192048415842684
2017	0.265642663548985
2018	0.334427262299794
2019	0.393788864202175
2020	0.243222682211879
2021	-1.81187141002542
2022	1.5709725672011
2023	1.87114719000125