Year	annual %
1961	4.787421154800441
1962	4.812402537998935
1963	4.919916989149215
1964	4.986384629041666
1965	5.0566608405087266
1966	4.889617854658795
1967	4.917761599953522
1968	4.95279842581769
1969	4.98537023621725
1970	4.961353255796055
1971	5.303309202940596
1972	5.344100319063202
1973	5.394154298504631
1974	5.4626552506607595
1975	5.519746538909672
1976	5.534161636367713
1977	5.3229845651504775
1978	5.341768620400941
1979	4.938509559604157
1980	4.913670367265155
1981	5.39114727665428
1982	5.367484023837179
1983	5.151480311207862
1984	5.106000894631094
1985	5.294208448870279
1986	5.207434896967598
1987	5.120615059167562
1988	5.045130262859871
1989	4.9795595664787555
1990	4.700508368574901
1991	4.085717237538873
1992	4.127485591170526
1993	4.031079443606657
1994	3.9259117118319864
1995	3.9539025853889314
1996	3.9507593131905168
1997	4.0809468875197155
1998	4.1312791634930335
1999	4.110491131290914
2000	4.145189490834994
2001	4.567985709261052
2002	4.556128123015625
2003	4.55591741874845
2004	4.559349846887244
2005	4.570264685516136
2006	4.558017649609653
2007	4.518461665065246
2008	4.4870237195847125
2009	4.477331406566293
2010	4.466047072942985
2011	4.4321451359284225
2012	4.362969663571505
2013	4.26573064522988
2014	4.227751365970775
2015	4.178107708387074
2016	4.132519943382945
2017	4.09545269542204
2018	4.029438510808859
2019	3.9672224523035453
2020	3.923804232138977
2021	3.852868204028283
2022	3.7938110810422927
2023	3.7702193945701907