Year	annual %
1961	2.81775284899279
1962	2.39289187939334
1963	2.40252786186063
1964	2.41033936120029
1965	2.42487890666739
1966	2.42237312113516
1967	2.41981623745483
1968	2.42963867786643
1969	2.48373763693269
1970	2.65329212656873
1971	2.74889179598687
1972	2.78314435025524
1973	2.85493128782002
1974	2.88196939062148
1975	2.89027520877187
1976	2.88798591220634
1977	2.96714888777962
1978	3.07212489003984
1979	3.10838091462825
1980	2.99044721748792
1981	2.88840600631813
1982	3.00060385682506
1983	3.12241979488404
1984	2.72255353932202
1985	2.28917754339816
1986	2.31873365509307
1987	2.39812313138497
1988	2.49051023557603
1989	2.56216687906059
1990	2.58730751161564
1991	2.5343846712328
1992	2.48151592189423
1993	2.44550905017119
1994	2.35858966266215
1995	2.30882146600629
1996	2.29660255020337
1997	2.3485207263226
1998	2.41566538352003
1999	2.43910069831105
2000	2.51651873851715
2001	2.65976868907588
2002	2.74837991725016
2003	2.71443282052613
2004	2.66890927022094
2005	2.65989488010389
2006	2.63916146161943
2007	2.60546378550717
2008	2.57232722220713
2009	2.53550492031822
2010	2.46999616717291
2011	2.43818163019966
2012	2.46059584044277
2013	2.45242725553535
2014	2.40764489206261
2015	2.36426975910316
2016	2.33938325896993
2017	2.23494542871956
2018	2.1226797659381
2019	2.08893118401294
2020	2.06626880077022
2021	2.00774487031161
2022	1.93898294382388
2023	1.91170171695852