Year	annual %
1961	7.284386965576515
1962	7.324153527160881
1963	7.395296056927647
1964	7.427592867347846
1965	7.417582082653534
1966	7.478004212361901
1967	7.48889171367932
1968	7.549847637892486
1969	7.493327334113878
1970	4.600090712301566
1971	3.9475826974386443
1972	3.611449427239731
1973	3.4601575192666356
1974	3.601105746083763
1975	3.7103758525432076
1976	3.7454793581479984
1977	3.7582945374104026
1978	3.7462245794432683
1979	3.5010836642068774
1980	4.463785476231432
1981	5.987089608181313
1982	6.224286056537931
1983	6.37056391562026
1984	6.57613344411996
1985	6.704439125955876
1986	6.7823406266416075
1987	6.925344832625846
1988	6.995724459279681
1989	7.021015546189696
1990	7.006126137620998
1991	6.629768766797893
1992	6.299607150107739
1993	6.32289644223705
1994	6.204962960708857
1995	5.574803919182445
1996	5.552493498031319
1997	5.729674207491122
1998	5.78967209788221
1999	6.037282915056016
2000	5.92654401983794
2001	5.812838621368261
2002	5.865644451348283
2003	5.8660552252828415
2004	5.697538337793941
2005	5.61353644023847
2006	5.619865346114364
2007	5.617433173380766
2008	5.600502730777303
2009	5.567315110602718
2010	5.5550813734847
2011	5.52939767423953
2012	5.502855924335632
2013	5.457722813629527
2014	5.540831869772438
2015	5.644021762412076
2016	5.859517222784218
2017	5.993330290607375
2018	5.862543634742365
2019	5.834181652181293
2020	5.737879423053871
2021	5.583485133727637
2022	5.342484502285186
2023	5.094203178562682