Year	annual %
1961	-3.261981202340934
1962	7.076655434168771
1963	2.8088025700939454
1964	-6.110623330342534
1965	-5.943681492538957
1966	9.098654707721465
1967	5.940943616613708
1968	2.0299773248363664
1969	-1.6995697173319115
1970	4.58140792145096
1971	2.1383647798669756
1972	14.88095238095572
1973	-12.149365731641353
1974	0.7524913565222704
1975	14.695195801371128
1976	-1.8479408658945289
1977	13.645329029939873
1978	5.799418604657475
1979	-4.986948756698183
1980	1.7929438982069286
1981	6.264204545452273
1982	2.7670097580533053
1983	-11.576482830383085
1984	3.265666372459904
1985	9.52991452991381
1986	-2.1459227467789646
1987	10.087719298245233
1988	3.415247720596895
1989	3.8076646703294728
1990	2.3269304857608972
1991	2.9505708443703753
1992	-8.488323481243953
1993	3.990596418719022
1994	-17.846989488310783
1995	3.9905964187198606
1996	8.046015050056823
1997	1.180491846464335
1998	6.586493253431414
1999	7.318295504116151
2000	7.110314311278927
2001	7.110314311277222
2002	7.630267293372768
2003	7.63026729337453
2004	7.110314311274053
2005	7.110314311277733
2006	6.486370732766517
2007	6.69435192560654
2008	6.6943519256019215
2009	6.694351925605076
2010	6.694351925604124
2011	6.6943519256024615
2012	6.694351925601836
2013	-2.7085865131368365
2014	7.526391611323817
2015	9.946799979380344
2016	6.4185706052816585
2017	9.507286606515592
2018	2.989015631591954
2019	3.6303968823801114
2020	-2.563087580427137
2021	3.310989234233247
2022	2.4380652772161113
2023	3.1029619961506967