Year	annual %
1961	0.947088128038174
1962	0.953480267157123
1963	1.00943675581332
1964	1.04953929258084
1965	1.0821896288202
1966	1.11195007517322
1967	1.12527199375413
1968	1.08158606986616
1969	0.986633651618876
1970	0.929073008597964
1971	0.953269406972334
1972	0.966159607124229
1973	0.90149230650858
1974	0.816964668052063
1975	0.720190186801496
1976	0.520035104378846
1977	0.293150474991031
1978	0.189735524907974
1979	0.143239026201041
1980	0.104755436927051
1981	0.41014662125837
1982	0.855408045623574
1983	0.972771063675941
1984	0.967939581429526
1985	0.975896662419292
1986	1.01246680477082
1987	1.07426366600349
1988	1.09551544683041
1989	1.05635420711932
1990	0.981321462903155
1991	0.677637109865562
1992	0.320205656429047
1993	0.196973704391912
1994	0.122911831513546
1995	0.0652574358742919
1996	0.237513992907106
1997	0.4545351292326
1998	0.460106455286759
1999	0.415193903529597
2000	0.341241968130063
2001	0.506608257016431
2002	0.766005021042782
2003	0.794568117674261
2004	0.803686357858662
2005	0.815852624411776
2006	0.807276438769338
2007	0.812559760565262
2008	0.812484157524789
2009	0.803367355727897
2010	0.77530181672538
2011	0.562984406870747
2012	0.50689022702539
2013	0.736777668306596
2014	0.697214600852119
2015	0.791085579747361
2016	0.939527209520039
2017	0.908389640157369
2018	1.22958532233632
2019	1.27783031331199
2020	1.00023446187106
2021	0.913338674061597
2022	0.80516754536027
2023	0.725194564039875