Year	annual % growth
1971	5.775729355958134
1972	2.4541542729923833
1973	5.756137392092597
1974	1.1943917877822656
1975	0.7293439329436637
1976	1.7348350420790979
1977	1.0113387628935584
1978	0.5114460145802582
1979	2.680250813029943
1980	7.296170079585892
1981	4.549757213497841
1982	0.22424700048932777
1983	0.8091904733719986
1984	5.832829261405848
1985	5.099330628854432
1986	-1.4363353638261742
1987	-2.1461981648728283
1988	-3.8366366055474543
1989	-1.5735776138457993
1990	0.8412240981963777
1991	5.271496759247057
1992	1.232901696281715
1993	1.613884954106453
1994	4.602675061117154
1995	4.935426804157032
1996	4.824427306320558
1997	8.026922626747506
1998	2.487348730678619
1999	1.9362976437547559
2000	7.1990024050354435
2001	4.377886502946211
2002	-1.8586634437623388
2003	1.4313382988812862
2004	6.703182697074396
2005	9.676773159745068
2006	5.582736600592412
2007	1.2818948174906808
2008	1.0204773050725038
2009	-7.9750123193891795
2010	3.7416171255767523
2011	1.0939265235105182
2012	3.066601111246243
2013	0.8561090450753852
2014	0.5287829484105657
2015	-1.720161865052333
2016	-2.480794314543175
2017	1.7294391379457892
2018	2.464064857408175
2019	-3.8984799033785436
2020	-8.072558346128943
2021	15.104238426861372