Year	annual %
1961	0.02239133367180557
1962	6.915842154382972
1963	-2.8469716807152423
1964	-1.1204491178588967
1965	6.777074072669649
1966	-3.575147484967232
1967	1.424081282978861
1968	1.9632208230600412
1969	1.3893504905018688
1970	5.925074716047888
1971	2.247314099773206
1972	-5.070986479097101
1973	0.6321952498383894
1974	11.445289142156795
1975	15.713466450316389
1976	16.665219736210517
1977	6.223853781956379
1978	-5.930986721447596
1979	-5.018599329536883
1980	1.5243101477997527
1981	7.437563656128049
1982	5.958666432572926
1983	2.062501694775804
1984	-5.008906768765897
1985	-6.281043580750662
1986	5.413811011900194
1987	14.220884598001419
1988	-0.3310918184394467
1989	8.931393687877673
1990	-5.4700537764081645
1991	7.5109103536653805
1992	6.577861384996027
1993	4.568749189547134
1994	1.00622924788334
1995	5.99709226051246
1996	5.9191237633176
1997	18.312657185027277
1998	4.308504255250355
1999	3.1040956154965187
2000	6.34586743997545
2001	6.500360533968831
2002	6.0064715363131995
2003	6.288808161465155
2004	5.140888517626749
2005	5.643515513436313
2006	6.531411746779199
2007	5.735274236644841
2008	3.8467447312105776
2009	-2.767704365991378
2010	3.8582419523010714
2011	-3.213532092533711
2012	-17.004688404894466
2013	1.9551446330242186
2014	4.661379542298732
2015	1.9101768905275094
2016	3.467642184092881
2017	0.7092562847664396
2018	-2.6809305497998963
2019	-2.178251045300911
2020	-3.6298008241075195
2021	-1.8685204827206974
2022	-0.9578165911191832
2023	-12.046779196804337