Year	annual %
1961	5.828088081592739
1962	-4.645762936274338
1963	1.8026701764584914
1964	7.320316670295156
1965	-2.482436008130449
1966	-1.2822237461324448
1967	-3.423838978332199
1968	0.016030131556703964
1969	1.0875255704331295
1970	6.044483224270223
1971	-4.696630928648872
1972	-7.485596409752745
1973	-16.19294154060674
1974	-7.18818321818982
1975	-6.845801401711299
1976	-2.355502883908315
1977	-14.469400059916708
1978	12.991519397676512
1979	0.7289796109140667
1980	1.5495979346969762
1981	-5.890902767527578
1982	-5.794519122336595
1983	-0.18617905005808666
1984	4.349526534739482
1985	-1.2403767411326925
1986	0.4371647346360419
1987	0.46895815589107315
1988	1.655894719749412
1989	-1.217960202923635
1990	5.374421769760801
1991	-2.228747131809996
1992	2.0500316854111844
1993	1.447894046698977
1994	1.693231236133812
1995	1.827574979757273
1996	-1.8327467905571666
1997	-0.7402827085971211
1998	-0.20082170104596742
1999	2.0182878412688012
2000	2.993752763421881
2001	2.173565644864752
2002	-0.8031469068562842
2003	2.2501814440879713
2004	4.223643622329746
2005	5.1238707661676415
2006	5.759553145704814
2007	6.310553104174716
2008	3.0611997330377534
2009	1.3954255379316152
2010	3.416711021643451
2011	5.201489840197482
2012	2.8275429623236334
2013	3.8036884211088022
2014	2.717758722575539
2015	4.564258977090915
2016	1.7422779521255336
2017	4.949333270429918
2018	8.149869500429546
2019	3.694670479896118
2020	1.8250170509127344
2021	6.781129535662814
2022	6.327505734904705
2023	0.9072793373549928