Year	annual %
1961	2.6665204669536564
1962	1.8899628533112178
1963	-7.8040006402954845
1964	2.0407663775335436
1965	-0.7050542915149407
1966	-1.5727702055789194
1967	-10.889842641457392
1968	4.979208642859618
1969	1.4120708421857557
1970	9.246541897997119
1971	1.6873919747149415
1972	24.404010353200277
1973	-12.044189105787822
1974	-9.730162613521784
1975	-8.434084319522512
1976	9.501893033041299
1977	12.381524055896207
1978	9.015905326813382
1979	2.757369796346694
1980	1.8727467664263457
1981	3.9264117274631474
1982	3.726162099154152
1983	1.5072443885208742
1984	5.9632191339556755
1985	5.626937187548208
1986	5.142787583106838
1987	0.09473467261354074
1988	13.763237518169873
1989	1.185320821548558
1990	3.9945652791833197
1991	0.872827152060097
1992	5.962658705219951
1993	3.884636112079164
1994	-1.527559277317053
1995	7.5495576529269925
1996	1.1851086275842988
1997	3.5178313315271623
1998	4.191399432339594
1999	2.8634819293588833
2000	1.8015643370280543
2001	1.902230859567851
2002	5.519476975391456
2003	7.013934852908292
2004	4.57698700246371
2005	3.0053770862351996
2006	7.588435565880715
2007	3.8851550386376914
2008	0.8669994649605997
2009	-0.9508085014201271
2010	-4.005527481876612
2011	-0.05308858283888185
2012	1.7494518260206036
2013	3.066102157086675
2014	1.7597634688178942
2015	3.1982243910760673
2016	4.656031797378503
2017	1.8467483390249555
2018	3.438252031551599
2019	1.0042252201408814
2020	-3.4705076272171596
2021	1.0435081860232316
2022	7.555697873435307
2023	6.271697751267567