Year	annual %
1961	1.7631513648572792
1962	1.760734364080264
1963	1.8535539125282412
1964	1.8574968015994813
1965	1.822465807509218
1966	1.7491370013904373
1967	1.660497977209971
1968	1.544302549029993
1969	1.4262071403922505
1970	1.2689710608844678
1971	1.2480049203112458
1972	1.3196596057841532
1973	1.2550324131491095
1974	1.1939264264920126
1975	1.10174742067872
1976	0.9997675405409581
1977	0.9852636652047124
1978	0.9764269015564082
1979	0.9380756352088184
1980	0.9246207903140942
1981	0.8291329073451834
1982	0.6298988658369922
1983	0.5036398663212225
1984	0.42285214530963344
1985	0.4169775098463049
1986	0.49324347988782336
1987	0.5953636725416942
1988	0.6179098568394465
1989	0.5585146861363057
1990	0.576030493250272
1991	0.6198728612144748
1992	0.5173090685235593
1993	0.5119344566759878
1994	0.4510279258480523
1995	0.3908522607460867
1996	0.36294117626984246
1997	0.342502019125007
1998	0.3212121112453872
1999	0.35901321923003593
2000	0.3408041278039917
2001	0.39592885268740474
2002	0.5518594421059646
2003	0.6698640783868228
2004	0.6824740201383293
2005	0.6611945706269466
2006	0.6270587074737222
2007	0.6418943357351168
2008	0.6243191735406839
2009	0.5247736966756094
2010	0.427582957695563
2011	0.09036703686886938
2012	0.40592855138304174
2013	0.49321160806084663
2014	0.49290708415145446
2015	0.4770727832405868
2016	0.4795627301235754
2017	0.4306262718367151
2018	0.4591164840047668
2019	0.37969654592318136
2020	0.3697606880143951
2021	0.19946448398191308
2022	0.4009430575977859
2023	0.8000410343073128