Year	annual %
1961	3.63482787677081
1962	3.58081641449101
1963	3.5044683593811
1964	3.41185905780376
1965	3.30308772209251
1966	3.18586019855954
1967	3.06170198844071
1968	2.90403220393468
1969	2.78686233527351
1970	2.71636306038062
1971	2.64767274255807
1972	2.59328555465073
1973	2.55958628696517
1974	2.55830068574315
1975	2.57155211691094
1976	2.60303887566708
1977	2.6445292256157
1978	2.68554030631481
1979	2.72041089468848
1980	2.73110989940276
1981	2.73856861732179
1982	2.76028759661915
1983	2.77410685602989
1984	2.7703110963721
1985	2.75319653423939
1986	2.71886328639952
1987	2.65920370774586
1988	2.59431605634214
1989	2.55060236009875
1990	2.54138328976122
1991	2.53734226281102
1992	2.51561993414361
1993	2.48055361450883
1994	2.43045420119032
1995	2.37065492148785
1996	2.30683799579665
1997	2.24971306873938
1998	2.1691556368856
1999	2.07208096201444
2000	1.97358823214158
2001	1.84330854695316
2002	1.69774908835068
2003	1.58793253810516
2004	1.52086528848105
2005	1.47252758666781
2006	1.43284202712965
2007	1.40273700394929
2008	1.38455388597677
2009	1.35039395502168
2010	1.2873898093698
2011	1.24002656207939
2012	1.20358030533586
2013	1.1532718484809
2014	1.09494595424381
2015	1.04634340433544
2016	1.01547072688832
2017	0.978713315995535
2018	0.934615300864476
2019	0.865128346659953
2020	0.755771068349343
2021	0.600406861056438
2022	0.520031291578434
2023	0.603176926750417