Year	annual %
1961	2.660180116271178
1962	2.732633114698274
1963	2.7532482720899623
1964	2.8069149715768162
1965	2.8407868783149866
1966	2.8136094911452147
1967	2.83050527400394
1968	2.8815885165886357
1969	2.8985320297837234
1970	2.911526135204994
1971	2.914855876042324
1972	2.870881427446605
1973	2.9039383175026785
1974	2.9862956450671447
1975	2.9824090951305635
1976	2.9698099053500897
1977	2.8840960153398356
1978	3.0127328315668507
1979	3.1425939742346714
1980	2.9654062360194473
1981	3.0175640283246707
1982	3.130762162751651
1983	3.012800811056124
1984	2.9390881143832104
1985	2.9702929469247863
1986	3.022263838132517
1987	3.06281660734588
1988	2.919181868755814
1989	2.844887620522556
1990	2.9110128661570513
1991	2.7924103579964594
1992	2.633682258665587
1993	2.658526402196216
1994	2.6199545435714953
1995	2.6271070297930237
1996	2.6930977277822166
1997	2.5803841220213997
1998	2.5146539339914824
1999	2.559662481701025
2000	2.5835792421521973
2001	2.5899606003565054
2002	2.6065980256376804
2003	2.6177642838139974
2004	2.644968430281864
2005	2.666241587303105
2006	2.702521120915364
2007	2.7471088511629773
2008	2.7658159760914884
2009	2.755745297669847
2010	2.7579291424742394
2011	2.7381848454464546
2012	2.740404834239655
2013	2.780206833556065
2014	2.7749902913343476
2015	2.80258582087383
2016	2.7281585299875815
2017	2.6556715992301463
2018	2.6883714280742765
2019	2.6911343805639802
2020	2.6781837164190136
2021	2.6074716940955796
2022	2.5437565245545812
2023	2.5315867122843088