Year	annual % growth
1971	0.7990296584900136
1972	6.712817285412157
1973	5.947524990245199
1974	0.0071403106660596904
1975	-1.548704990497086
1976	1.963710904298523
1977	-2.0449823545026646
1978	3.489229555491022
1979	7.6646847562154505
1980	1.8835138221386103
1981	1.1264282189520998
1982	2.4913968805047517
1983	1.8104381035946915
1984	4.218678734695928
1985	2.5098674871624667
1986	4.054092774736091
1987	2.9599765310199615
1988	6.2955406338303135
1989	2.384193137354245
1990	-2.679382876682695
1991	-10.404511150489384
1992	-5.935817946917595
1993	-2.0182801308313714
1994	6.706117259372533
1995	11.242799874413507
1996	3.0708719860692355
1997	8.086525695227323
1998	6.3433389005256515
1999	4.488614766314484
2000	4.201563145379069
2001	3.122510236884324
2002	1.155207886734999
2003	-0.6279584955314732
2004	4.377274869916832
2005	0.5270393408580105
2006	3.0116019401372256
2007	4.0276950273751595
2008	-1.491900884894605
2009	-8.648372585130076
2010	2.9472557593445288
2011	0.5198396929753955
2012	-2.894468423462726
2013	-1.0705779212781863
2014	0.6131565739017333
2015	1.6580647722099968
2016	2.0907271902949702
2017	2.5329797186987264
2018	1.5249701485735159
2019	0.6995845328874708
2020	-1.2019735670678529
2021	3.64118618045282