Year	annual %
1971	2.036942336887762
1972	3.5972839355890045
1973	5.473036851697003
1974	-0.027748576914120804
1975	-0.8210639183638904
1976	1.289825428026603
1977	5.333348567083121
1978	7.574131525699812
1979	3.0517741983129127
1980	-0.7202279589203329
1981	0.5147106082196586
1982	-7.932343263404434
1983	0.13942189884794232
1984	1.3793007406286648
1985	4.42392241591763
1986	1.9663790135475523
1987	3.3139916576441237
1988	4.933159116577102
1989	6.941470142004789
1990	1.3279729095993673
1991	1.2212496074680104
1992	2.1871709728061006
1993	2.3928112932520236
1994	3.9534321745156547
1995	2.917702306045598
1996	6.026215022031863
1997	5.807645177423666
1998	6.816580308079196
1999	8.257402966698365
2000	8.933941885657973
2001	3.079986620375209
2002	1.904099276736872
2003	1.130935531430822
2004	1.9365540920011313
2005	4.717003560620611
2006	3.557353008553548
2007	3.634777021730187
2008	-1.8308232837208749
2009	-6.280608351747659
2010	-0.24292320324839523
2011	-1.777758757031151
2012	-1.0897321097698978
2013	-0.19925155639725745
2014	1.9547763605545043
2015	2.4236693992053517
2016	3.640825574003486
2017	1.4753443111958262
2018	2.529180643909541
2019	1.0752096312060644
2020	-11.70584736685386
2021	7.425621086952887
2022	7.347470565847118
2023	0.4549169393134491