Year	annual %
1961	0.705711483663754
1962	0.679995399829919
1963	0.706977468183943
1964	0.556315625077213
1965	0.333374795369662
1966	0.374800826434961
1967	0.541550205582204
1968	0.448972197973546
1969	-0.0580308405654956
1970	-0.378718237915962
1971	0.126203705860136
1972	0.595195266324646
1973	0.567909197939041
1974	0.523542995771684
1975	0.443863075666863
1976	0.30144863871956
1977	0.279738313043981
1978	0.287122369568676
1979	0.25557902782611
1980	0.311078415926419
1981	0.426515644912231
1982	0.560285843941572
1983	0.595991320809624
1984	0.534342930873442
1985	0.41706890447956
1986	0.324794895907026
1987	0.283626731803862
1988	0.290689051012441
1989	0.361018799003539
1990	0.443382073914297
1991	0.546172018187903
1992	0.561909850746084
1993	0.483854088858285
1994	0.431048902829755
1995	0.381655333457214
1996	0.328037913627481
1997	0.297377330426395
1998	0.265472962436301
1999	0.232116249119004
2000	0.2076065154133
2001	0.227687341886374
2002	0.242381050233372
2003	0.238457240068217
2004	0.290350361518584
2005	0.342248594286999
2006	0.383777136305104
2007	0.425429832100631
2008	0.465549284507694
2009	0.478246393482911
2010	0.457494535465831
2011	0.463558707499131
2012	0.475809486683209
2013	0.460723772785295
2014	0.413560207519414
2015	0.329383885818507
2016	0.287421401687637
2017	0.234670531705453
2018	0.132641040791912
2019	0.110191690491055
2020	0.143641197212847
2021	0.207288594407348
2022	0.271944526506117
2023	0.505513909563998