Year	annual %
1961	1.60397501025788
1962	1.97043825707522
1963	2.30493744253899
1964	2.34353916911816
1965	2.38093210842847
1966	2.42195943414093
1967	2.46537017800941
1968	2.51380747847747
1969	2.56251119418139
1970	2.61502853980156
1971	2.66928954505938
1972	2.71089707424796
1973	2.74087062182524
1974	2.76215239574374
1975	2.77866583481315
1976	2.67578547164304
1977	2.5827859606679
1978	2.73834410642205
1979	2.83100494511977
1980	3.29934572711062
1981	3.56436472017992
1982	2.43844690341496
1983	2.11829467137139
1984	2.85788869354238
1985	3.06228759057588
1986	3.09768731951382
1987	3.12673533910802
1988	3.07352702221159
1989	3.0177775678828
1990	3.03133254749302
1991	2.99225551122619
1992	2.93571035733927
1993	2.91032942909575
1994	2.85853230465414
1995	2.784354192833
1996	2.71549439019134
1997	2.65933890348849
1998	2.64328036101189
1999	2.64977018150173
2000	2.63602726719356
2001	2.62667387658374
2002	2.67966597627532
2003	2.72911509031776
2004	2.74462206750134
2005	2.73315981250508
2006	2.71903433909344
2007	2.78067096838021
2008	2.83697090124967
2009	2.84662200490483
2010	2.85121531529997
2011	2.83123673541846
2012	2.81498378244419
2013	2.81353839574426
2014	3.03550756998046
2015	3.14758224896897
2016	2.99217541611777
2017	2.83379809494988
2018	2.7637376380325
2019	2.7748797807221
2020	2.71185365793296
2021	2.63581940586039
2022	2.59810258830226
2023	2.59113967946452