Year	annual % growth
1971	0.926322076369118
1972	7.349860868437958
1973	6.550922482849117
1974	0.532093668232946
1975	-1.1107447916667752
1976	2.271542867329515
1977	-1.770581016703133
1978	3.786797270949819
1979	7.9402050468913075
1980	2.200944916856116
1981	1.5586693892929162
1982	3.0672533832765083
1983	2.4190312580969504
1984	4.777054368957039
1985	2.938297070728325
1986	4.392604594021421
1987	3.2524130655737338
1988	6.6049796669648515
1989	2.7544873354371475
1990	-2.246922689130159
1991	-9.913826890546474
1992	-5.405774252716526
1993	-1.5430427723824636
1994	7.167065549631687
1995	11.668175170636516
1996	3.4095386980018247
1997	8.408428916268477
1998	6.626026776575728
1999	4.7314315192154055
2000	4.4181170919028006
2001	3.3575746437282135
2002	1.4006863183978027
2003	-0.3907159193278318
2004	4.680775058575094
2005	0.871681149342038
2006	3.407696490129524
2007	4.4712026135357235
2008	-1.0322279625123087
2009	-8.210440358788418
2010	3.419312823140345
2011	0.986889852120072
2012	-2.4313301379445704
2013	-0.6137349715486664
2014	1.0301141440410646
2015	1.993462125384454
2016	2.384579884849572
2017	2.7738769542375366
2018	1.6597232748602124
2019	0.8106082656317568
2020	-1.0599569262937365
2021	3.8562453580800735