Year	annual %
1961	2.21328394059148
1962	2.19114697162143
1963	2.39088364599123
1964	2.47243706132897
1965	2.45960904509463
1966	2.54704598638982
1967	2.76822866104554
1968	2.81707784882288
1969	2.70073239029996
1970	2.64452435625398
1971	2.53315674191945
1972	2.48319106885469
1973	2.25588654500614
1974	1.89705565566114
1975	1.72650734509176
1976	1.56582668880053
1977	1.42743092566343
1978	1.38723170880092
1979	1.40422376382463
1980	1.4259579252198
1981	1.44471053222166
1982	1.45296347351159
1983	1.44489273059819
1984	1.44802221713044
1985	1.4612108663707
1986	1.47697544945146
1987	1.47207915705238
1988	1.46417112328657
1989	1.46221942499228
1990	1.47508075307573
1991	1.50789243922554
1992	1.52489382821321
1993	1.54135344270226
1994	1.51425550655911
1995	1.26010300930167
1996	1.01694918601768
1997	0.937585815556236
1998	0.856095440228289
1999	0.782479876039855
2000	0.698115634060685
2001	0.620583476817431
2002	0.533984339747177
2003	0.60436980005948
2004	0.700697475242568
2005	0.632894010472634
2006	0.557668311641366
2007	0.496973102800538
2008	0.460993034958389
2009	0.458556258017028
2010	0.425940886169344
2011	0.393586759082814
2012	0.418674807001654
2013	0.457206407016513
2014	0.49597980701513
2015	0.523515080357903
2016	0.519654351165206
2017	0.497821203562078
2018	0.476315091651054
2019	0.456446820087896
2020	0.434017300434564
2021	0.402945210274924
2022	0.374729560022698
2023	0.35000834215513