Year	annual %
1961	-10.851376083633653
1962	21.2006975148133
1963	5.213990134349004
1964	-2.4402235644914896
1965	0.9973487935274363
1966	6.775485301721858
1967	-0.9857386614879573
1968	4.332698464019174
1969	9.3288374385548
1970	-0.24505657508628076
1971	6.005018067375573
1972	0.15113551378904333
1973	8.137275887401856
1974	3.1305858792362073
1975	-4.981631005253888
1976	-5.3090020809714105
1977	0.7607936015508159
1978	-5.345291527562409
1979	0.43008826209265294
1980	2.194912923677279
1981	2.3505240748609992
1982	-0.45767760896157483
1983	1.4117036882630174
1984	5.541074021969948
1985	0.4678509509460582
1986	4.717209653408517
1987	2.67564245126934
1988	0.47038133674870153
1989	-1.2660506356095453
1990	-6.568310694642463
1991	-8.421051499133767
1992	-10.500008564647729
1993	-13.469050538127945
1994	-3.8999968031238694
1995	0.6999988297943958
1996	-1.0231726419992242
1997	-5.617046598700881
1998	-1.62415404478989
1999	-4.270140831133503
2000	-6.910927316521011
2001	-2.1001730248884627
2002	2.9477651835976673
2003	5.577822311444237
2004	6.73837393324294
2005	6.135151155489723
2006	5.320979565489978
2007	6.259477764373969
2008	6.225894268691931
2009	2.8550640101148446
2010	7.107976575813922
2011	6.874670890016304
2012	7.0868989467194154
2013	8.481956636087546
2014	9.470288099310096
2015	6.916167119225605
2016	2.399398911334515
2017	3.726947658830099
2018	5.821121099690245
2019	4.38452887429834
2020	1.735422766814935
2021	6.200154010759462
2022	8.924447625631089
2023	8.560862509087187