Year	annual %
1961	3.434463574577109
1962	3.573652469325477
1963	3.6880311051642
1964	3.6541969970820527
1965	3.8550804448907625
1966	3.828215892457553
1967	3.8349715592357794
1968	3.823593928832461
1969	3.7930075991839876
1970	3.721117305112854
1971	3.5655202163658806
1972	-0.5480033787083551
1973	-4.770779952225401
1974	-5.151137311483501
1975	-5.51638425196125
1976	-5.8783025714685255
1977	-6.2169190868611794
1978	-6.578007434667342
1979	-6.952989055976061
1980	-6.571755556380785
1981	-0.015217341711946417
1982	0.16498454636684937
1983	0.348082298585935
1984	0.6263698692006474
1985	0.9672833726462339
1986	1.1202357597902726
1987	0.9225780100019365
1988	1.1049274650829695
1989	1.3168371485024326
1990	0.8556399223783082
1991	0.5621712586416293
1992	0.6309566834009174
1993	0.46106460655361464
1994	0.7655870986748535
1995	1.6264969697824077
1996	1.9097860992310516
1997	1.8034194771480203
1998	1.7181517622021187
1999	1.6486848730202897
2000	1.5821338787550974
2001	1.519507389976238
2002	1.4617448696748823
2003	1.4049646910382387
2004	1.1202940374283612
2005	1.2649879354370832
2006	1.3186394937875556
2007	1.3320572803987822
2008	1.331309472961722
2009	1.3265002249581512
2010	1.3243703265009523
2011	1.3065227269342177
2012	1.2758875652552852
2013	1.2409624170694304
2014	1.162619145001019
2015	1.1088231714278578
2016	1.080458576028173
2017	1.041849268689934
2018	0.9864531063228115
2019	0.999912044027111
2020	0.9613060851129849
2021	0.7630257346023263
2022	0.5605493021511566
2023	0.5282895601028692