Year	annual %
1961	2.48716112748639
1962	2.27728810106676
1963	2.21577882578914
1964	2.14600380568892
1965	2.12711031805335
1966	2.19482078105828
1967	2.2271479736908
1968	2.24398374230985
1969	2.31232882673833
1970	2.36341181456913
1971	2.39199682291101
1972	2.37936889767955
1973	2.32627618285015
1974	2.2633280112203
1975	2.21251749459205
1976	2.17253685235323
1977	2.13867935178094
1978	2.10393134737699
1979	2.0691900659496
1980	2.04624584112729
1981	2.04936800195646
1982	2.06714159406125
1983	2.09255585473102
1984	2.12007026512604
1985	2.14354523380954
1986	2.16168101808063
1987	2.1740062941715
1988	2.17887920258063
1989	2.26940661326066
1990	2.64424606515874
1991	3.20861357357665
1992	3.58442578343694
1993	3.67719965352654
1994	3.66278702808236
1995	3.63389307724082
1996	3.60494215869651
1997	3.58211946279432
1998	3.53309876155072
1999	3.49089390798656
2000	3.4521329401203
2001	3.39455509979259
2002	3.34955956126701
2003	3.31123407239589
2004	3.26552943968256
2005	3.2156031499028
2006	3.17128786595142
2007	3.12366111372057
2008	3.08611399149295
2009	3.0478162226257
2010	3.00352670267458
2011	2.90298961470657
2012	2.77799045268741
2013	2.69288253584226
2014	2.61569523033674
2015	2.54320066295637
2016	2.46859434505795
2017	2.39411255967524
2018	2.325313321969
2019	2.26018781066996
2020	2.14763227357632
2021	2.02856054038959
2022	1.92302821820746
2023	1.82993546980529