Year	annual %
1961	2.1478580869174855
1962	1.5203291397822365
1963	1.3570415949195713
1964	1.186471931968882
1965	1.0015764844136288
1966	0.8353709153645821
1967	0.35873286328410664
1968	-0.11943469006500877
1969	-0.2659222415339902
1970	-0.40689780317248486
1971	-0.5227193245073634
1972	0.03694808835679423
1973	0.8327389559578449
1974	1.0798740202545298
1975	1.1074455438986464
1976	0.7531036048757975
1977	0.4130903699084935
1978	0.41459828949066224
1979	0.40330379228793767
1980	0.38895668497328095
1981	0.5268181019563296
1982	0.7662147877033035
1983	0.866320763198559
1984	0.7383999794639893
1985	0.4410524537330006
1986	0.08613264959720907
1987	-0.19082213170855095
1988	-0.21279556533321622
1989	0.37901593789191007
1990	1.683479831712105
1991	3.1905569212987936
1992	2.7647536840243703
1993	2.2177106814807868
1994	2.3630302789786835
1995	2.2472855852058577
1996	2.1796645903044114
1997	2.1764905974051296
1998	2.1450908829581166
1999	2.0707330715626955
2000	1.6642221239266346
2001	0.9563730994071454
2002	0.40133515439521483
2003	0.19651721114105739
2004	0.09456936184864558
2005	0.19358804855949266
2006	0.36725798748009086
2007	0.40804896916345096
2008	0.41338296737550695
2009	0.40239630967871653
2010	0.29437351036836934
2011	0.6620631110685385
2012	0.8493932496277116
2013	0.8264134578408069
2014	0.810669184722173
2015	0.7930255675977564
2016	0.7845784927087877
2017	0.7718989340701872
2018	0.7659862651217721
2019	0.7623209629797129
2020	0.479957875888498
2021	0.34295056548224784
2022	0.33538082170721
2023	0.30024617170151563