Year	annual %
1961	7.548286031521158
1962	20.871865494416156
1963	-11.373115021514892
1964	5.961391489664663
1965	-0.856338603070327
1966	-10.550791455239207
1967	4.828293647588211
1968	0.4062037834817005
1969	14.907381362283132
1970	-5.02670069027657
1971	5.30102265083579
1972	21.390339415534328
1973	-13.468676057677413
1974	21.597539844760334
1975	12.43717255335413
1976	8.4703183437463
1977	-5.1095119557049316
1978	6.226283638043
1979	-2.519969507920578
1980	10.670910689191587
1981	4.188165687304405
1982	-0.5301540241785005
1983	-1.057654304235271
1984	-10.765027109942764
1985	5.639140382070806
1986	-11.047372997032284
1987	-1.6841525503436827
1988	14.198176003319233
1989	-16.347666471012175
1990	0.6053897080515043
1991	4.522250220297465
1992	9.760214758530594
1993	3.1659961190477333
1994	4.243927053240569
1995	4.104264049766712
1996	6.873052419279617
1997	2.2764063648752426
1998	4.053446156553321
1999	-5.983591992310878
2000	-1.8336034957341525
2001	-1.4915520004742433
2002	1.3137319526732654
2003	4.481402484762455
2004	4.108899983363344
2005	3.3598794396997533
2006	0.45960573327145937
2007	-0.8129680459802131
2008	0.7253020045456822
2009	4.198402533877584
2010	2.788601917111876
2011	1.0710221297588731
2012	-25.9311923188461
2013	-22.49521228981793
2014	-3.9492529348086265
2015	0.14619250222793312
2016	-5.216546919150673
2017	-0.8232782390652886
2018	-0.44284972903170683
2019	-2.630992158550953
2020	-3.4227270830265155
2021	-1.3214116536430964