Year	annual %
1961	-13.746135053983892
1962	9.063157933865625
1963	4.135407421855746
1964	6.273037900870619
1965	3.967225609280149
1966	4.612992895576838
1967	13.821518602087423
1968	-0.29788367347217104
1969	-1.4595411424562172
1970	21.325670732865447
1971	2.74682871213831
1972	-6.40396492407875
1973	6.8890507189633325
1974	-0.7268395627463349
1975	0.6979202362151966
1976	7.942660976141397
1977	11.469453043912537
1978	-0.9405759884096483
1979	1.6649549502354262
1980	0.9910557251064773
1981	12.163275569828286
1982	-1.053599820210124
1983	3.715326991391123
1984	0.15554400495973653
1985	11.783180178665404
1986	3.250180459702406
1987	5.503096119522439
1988	5.031024367491213
1989	1.3495022365178357
1990	3.4998221361125275
1991	4.996836447921254
1992	1.0099983709962856
1993	-6.24000000139047
1994	-3.829999996198282
1995	-7.920000003747717
1996	-7.999999997940932
1997	-1.5899999968582819
1998	4.7499999950961325
1999	-1.009999996498152
2000	-0.8568640584241507
2001	2.0558071083524254
2002	4.446519412247966
2003	-1.2237279602344415
2004	4.833657768094525
2005	0.9000000009019118
2006	5.413807144914443
2007	3.4519485638194283
2008	4.861716367126405
2009	3.812745366334184
2010	5.124159994398056
2011	4.032599988444147
2012	4.446706331114953
2013	4.924189898346839
2014	4.240650214026573
2015	-3.9000000804854977
2016	-0.6000009091163889
2017	0.5000012624292793
2018	1.609935421277143
2019	1.812565324015523
2020	0.327156892638385
2021	3.0999999987062665
2022	1.848999439482128
2023	2.7000005970513286