Year	annual %
1961	0.6472002355205826
1962	0.9631839890976386
1963	0.8875837411504061
1964	0.8747350536427738
1965	0.9074661349050949
1966	0.837814535267043
1967	0.6661609546651152
1968	0.5693546111388156
1969	0.6891791741887918
1970	0.7653176192592681
1971	0.5348792796182217
1972	0.17009087507972204
1973	-0.01821799595362748
1974	-0.06638369701241723
1975	0.03675498273649029
1976	-0.07427927478649399
1977	-0.2665549235380349
1978	-0.2506121598456123
1979	-0.18315941515923329
1980	-0.08413799085970164
1981	-0.3374628135458943
1982	-0.7146167728562413
1983	-0.8020239110783957
1984	-0.7924724082605407
1985	-0.7284062384602545
1986	-0.6481306364517774
1987	-0.577040211222202
1988	-0.5709949358747203
1989	-0.6227360835483553
1990	-0.5427540227095237
1991	-1.2931228107497925
1992	-2.2020812931830425
1993	-2.2924830379442893
1994	-2.4251425232667416
1995	-2.5735472040047256
1996	-2.6424359246572178
1997	-2.618001874222879
1998	-2.5528118433077096
1999	-2.5367580409351635
2000	-2.5287520813231326
2001	-3.807929936430885
2002	-5.323006206989507
2003	-5.587366006270996
2004	-5.8046657096325465
2005	-5.993261335697362
2006	-5.805460614166788
2007	-5.458787936044289
2008	-5.354312008192841
2009	-5.747037768525667
2010	-5.8553854130383245
2011	-5.498483740124626
2012	-5.657339268087705
2013	-5.096810144311095
2014	-4.403659323806046
2015	-4.354835105328967
2016	-4.283237572010448
2017	-4.243484862878673
2018	-4.155137383075592
2019	-3.986813550687427
2020	-3.9769924404966996
2021	-3.900569489509903
2022	-3.365944667677784
2023	-3.2024579439850873