Year	annual %
1961	0.9808500175319921
1962	-0.5864875468217434
1963	-0.4503558332251316
1964	0.3990553132058068
1965	-30.18749279892515
1966	2.8801252006314826
1967	0.5881294875197796
1968	4.358322388185741
1969	3.9522453908444675
1970	1.6871663144740552
1971	2.174905053092729
1972	2.1160039378526534
1973	2.6486739681027984
1974	-1.181847620892512
1975	0.9845601910763122
1976	5.766088432451369
1977	2.2755425739198927
1978	3.663439285380406
1979	5.512454904182576
1980	5.68664848448492
1981	5.151791550033707
1982	5.710350134387696
1983	4.960904581289128
1984	6.331624305585336
1985	5.9097643250137395
1986	3.7422613886625413
1987	8.249574212629042
1988	17.526076568541797
1989	18.73654563408857
1990	25.66604967366402
1991	35.71544123657
1992	21.509179649469573
1993	21.278455085663865
1994	19.4910605451918
1995	26.73278894445133
1996	21.930280736456027
1997	20.260798577871668
1998	13.767238925827698
1999	8.120264320541565
2000	9.58348091637275
2001	11.046563989159509
2002	8.091505830952443
2003	5.433446106405285
2004	5.09107072516386
2005	2.627030946517351
2006	3.6566864397030514
2007	5.443677216665833
2008	4.806138667578239
2009	4.1990645514699025
2010	2.5325704530004884
2011	1.9287207028937559
2012	2.892761678161577
2013	2.8205318902618615
2014	3.6927260947231986
2015	2.7757419080134014
2016	1.3204719948326016
2017	4.029705051444225
2018	4.847425391946004
2019	4.785025180793895
2020	6.389476605677231
2021	6.439248105150867
2022	14.231341158132153
2023	14.749005135155556