Year	annual % growth
1971	5.76314427236224
1972	7.82792333396101
1973	7.020037097681481
1974	-2.908644593823837
1975	4.360643984307572
1976	4.978969624360147
1977	4.883991651043445
1978	6.501580756241438
1979	2.9399449799456363
1980	0.18175659125108723
1981	3.2642631808935647
1982	3.0854145263082557
1983	2.70569732498096
1984	4.792845372894888
1985	6.233656145279639
1986	4.300997157818884
1987	3.9519201970071407
1988	7.387006561232795
1989	4.456763241631023
1990	4.732066558275989
1991	2.3973410738782377
1992	-0.16467440042127635
1993	-0.895146633196731
1994	2.3359363118994594
1995	3.141291828576186
1996	3.428913375323205
1997	0.07654599478674129
1998	-1.8506323818964603
1999	-0.8938292730733508
2000	2.7391623164364063
2001	0.5084989699630995
2002	-0.45078787071145143
2003	1.616660826958082
2004	2.420643709706468
2005	1.2762838667821512
2006	0.4974681754925854
2007	1.078763029733338
2008	-4.682252967770367
2009	-5.81707494997265
2010	4.954257000209466
2011	-0.7548734153531456
2012	1.56672899007917
2013	2.698262465614846
2014	0.35398244376854393
2015	4.056309829193566
2016	1.3986738604973254
2017	1.3962707081500696
2018	-0.37081565830476393
2019	-0.37515186015332347
2020	-5.374735121178105
2021	-1.2764999795729608