Year	annual %
1961	1.3279700503533434
1962	1.963908485025101
1963	2.5178634069594494
1964	2.4685081574692447
1965	2.4497130931221847
1966	2.551750461987453
1967	2.4784634077850427
1968	2.4957367098370895
1969	2.536094406279048
1970	2.5212346752364425
1971	2.472513585569274
1972	2.3824129657444217
1973	2.3609028097453972
1974	2.282569232830454
1975	2.171003578395812
1976	2.0973891739699297
1977	2.0463009727691883
1978	2.029095749897735
1979	2.03596876864313
1980	2.0603726174651626
1981	2.1034479525168734
1982	2.14335483331827
1983	2.1029102000909745
1984	2.044093749230939
1985	2.0452372296895476
1986	2.0736596543662102
1987	2.088028985887604
1988	2.062504496072904
1989	2.0055568748902317
1990	2.0324007306570877
1991	1.910374961455659
1992	1.797089198908992
1993	1.732442416876438
1994	1.703664787761383
1995	1.662112738652695
1996	1.6284821986209295
1997	1.6006435214080028
1998	1.5615634769904858
1999	1.509314819781764
2000	1.4838225670832088
2001	1.4576511949751136
2002	1.3975538086360189
2003	1.3516765332355192
2004	1.3365285680119428
2005	1.3091336439518386
2006	1.2617269618422995
2007	1.2214271125026386
2008	1.2265812483532272
2009	1.2292789810539801
2010	1.2348500505887614
2011	1.2544000680454275
2012	1.2721307470878287
2013	1.2748632178649189
2014	1.2531911473832764
2015	1.2125318769039808
2016	1.1746023645546018
2017	1.1592712849569438
2018	1.1136635596681828
2019	1.0557130009311493
2020	0.9857826404817018
2021	0.8858108783358603
2022	0.7103432027629708
2023	0.7989449490350324