Year	annual %
1971	-0.6375098918025088
1972	-0.5461694941808872
1973	31.62442192522832
1974	12.450416489231259
1975	-3.1693995566390356
1976	-2.9297303140450452
1977	-0.9283588781025571
1978	2.1610570797302273
1979	-1.202859476962459
1980	-10.345966432813753
1981	2.4922839856620413
1982	0.7373246340662405
1983	10.99363939611932
1984	-0.19017867619436402
1985	-9.926447937112215
1986	19.73313737890254
1987	5.222564213219442
1988	3.9277182669247566
1989	-4.534571755438336
1990	0.3148734107116127
1991	-2.052067051927608
1992	4.994248071315695
1993	3.994149347170705
1994	3.9743071467178055
1995	6.373487640552611
1996	-11.757926329447614
1997	-7.910855441486447
1998	-2.1799659765910917
1999	-2.562660754828144
2000	1.7175359416461191
2001	6.558626144651768
2002	3.4779500756585264
2003	-1.5562812320835775
2004	-0.5864677195634158
2005	1.9682661291126067
2006	0.4581095119333298
2007	3.741620282698662
2008	-7.265300220528957
2009	4.12970653952766
2010	5.796174370080664
2011	0.6241172501470373
2012	0.14305538382166105
2013	5.327470719534205
2014	0.6715042680164345
2015	4.185510711370782
2016	4.429005844210991
2017	6.244320152244825
2018	8.411602098033157
2019	13.469107016704612
2020	0.09685882683467639
2021	4.389734103460796
2022	0.4737699412970642
2023	2.1764347123975085