Year	annual %
1961	0.7010761618012685
1962	1.2115033047040384
1963	1.281344710578406
1964	1.3851413539484094
1965	1.3120828499357184
1966	1.1995337361157334
1967	1.088958095299749
1968	0.9938110030698906
1969	0.9488703017736274
1970	0.345717524457064
1971	1.0595142800538575
1972	2.2190793069524255
1973	2.289278296614982
1974	2.3432851896655027
1975	2.319196561976209
1976	2.2294912087206615
1977	2.099770618804902
1978	1.9877824265920028
1979	1.8810196731258808
1980	1.4543843879607037
1981	0.3818992650980274
1982	0.09968034726453082
1983	0.04905806748076257
1984	0.02310123790661431
1985	0.028345977737689036
1986	0.010922867431694827
1987	0.010716342593120027
1988	0.03836407424760865
1989	0.017380880882425825
1990	-0.30637141120670686
1991	-0.3225291512998719
1992	-0.0682110519954974
1993	-0.06812836484183837
1994	-0.13625376733020278
1995	-0.23399770745012693
1996	-0.2906833959245614
1997	-0.28372823641327566
1998	-0.2710201896773198
1999	-0.27876213054647647
2000	-0.4586622047026037
2001	-0.5258601725742564
2002	-0.28498165395158
2003	-0.12215409631638134
2004	-0.0631829985834922
2005	0.044623474377798
2006	0.17700669037890926
2007	0.48830151237978286
2008	0.7354500348242683
2009	0.4743068717888417
2010	0.1972090936798627
2011	0.11114592213405217
2012	0.1563172974735181
2013	0.16014820537862864
2014	0.23345697279923183
2015	0.3232374564408751
2016	0.3185298331592441
2017	0.4082654336962648
2018	0.49310339330087255
2019	0.5684576385901617
2020	0.43244010765134555
2021	-1.6054982047789557
2022	1.7903595313955123
2023	2.1061658402672894