Year	annual %
1961	1.3869215401224295
1962	1.3991862090049665
1963	1.3770113342172152
1964	1.3636825773247807
1965	1.313102073027622
1966	1.2475117974048544
1967	1.2092326949048697
1968	1.1703198288720102
1969	1.154595621121942
1970	1.1235258736787017
1971	1.3110608265261448
1972	1.162381115675089
1973	1.1173281076783326
1974	1.084314312983409
1975	1.0468595250405741
1976	0.9752511003584914
1977	0.968916439419587
1978	0.9755892072079888
1979	0.9776892395636452
1980	0.9463730625523823
1981	0.9024798300458485
1982	0.8531901808301257
1983	0.8194182056411279
1984	0.7772557454348146
1985	0.7739718918043081
1986	0.7810203378650868
1987	0.7802540791907404
1988	0.7894122548761402
1989	0.8292803001632194
1990	0.8840429149174156
1991	0.992508774119031
1992	0.955467086885406
1993	0.904458431191955
1994	0.8454318736932294
1995	0.8146046230950788
1996	0.7931006448381339
1997	0.7855131153430506
1998	0.7517641354090898
1999	0.7469917167793199
2000	0.7263639689291352
2001	0.7552901928772542
2002	0.7567350760288463
2003	0.7410660101584483
2004	0.7390132007318897
2005	0.7238999489884748
2006	0.7389960514965139
2007	0.7371686335279577
2008	0.7661625803347505
2009	0.6999526036886863
2010	0.6590742079138465
2011	0.514700457138801
2012	0.6102705488199263
2013	0.6226936909876599
2014	0.641736708770452
2015	0.6236284537131382
2016	0.6370868982485121
2017	0.603152292281095
2018	0.5922382033360662
2019	0.530564686981009
2020	0.5484521717613831
2021	0.18037545965002266
2022	0.40039672573379903
2023	0.5473683466826458