Year	annual %
1961	1.3722507420122838
1962	1.9216387947727895
1963	2.401946276625978
1964	2.3644053315195777
1965	2.3465649985939763
1966	2.4086166140651954
1967	2.35754472432383
1968	2.375639313978411
1969	2.4083253966774976
1970	2.3934249732006947
1971	2.352140788293667
1972	2.276986359619457
1973	2.262806092790143
1974	2.204061152132681
1975	2.111765942634378
1976	2.054282732666721
1977	2.0048986747872846
1978	1.9988894350829582
1979	2.0080289298241496
1980	1.9956131221572377
1981	2.014229297922782
1982	2.0751378872569717
1983	2.0562550401996873
1984	2.0138864929023725
1985	2.0153944330116644
1986	2.0330876442097576
1987	2.046981686397615
1988	2.01942902566536
1989	1.9688353158360457
1990	1.9244878712183038
1991	1.8615257097306142
1992	1.7871058679707232
1993	1.746217147579273
1994	1.7075728409139828
1995	1.6693393576150868
1996	1.6425086669113398
1997	1.6119644208786923
1998	1.5754157800895285
1999	1.5300944170177644
2000	1.4909247870425588
2001	1.4686455954445563
2002	1.4428684282548687
2003	1.4165880763203234
2004	1.3952522412675705
2005	1.3756317230512138
2006	1.3482133973573127
2007	1.3145783295224192
2008	1.3167974241115417
2009	1.3261517375497505
2010	1.3310813941322976
2011	1.3535621856435256
2012	1.3656362204780947
2013	1.353318331962015
2014	1.3305949010192393
2015	1.299714718362651
2016	1.277311101574071
2017	1.265355732136399
2018	1.2213451423218231
2019	1.179498711270739
2020	1.1202737840936692
2021	1.0219949992712714
2022	0.862123771170431
2023	0.971935897226146