Year	annual % growth
1971	3.3809826910707272
1972	5.478557163790043
1973	5.7414275866851625
1974	-2.100149163214951
1975	0.3629695345537698
1976	4.677524374540184
1977	3.28531691295872
1978	4.870014599688275
1979	1.6445804127995132
1980	-0.46200833412976294
1981	1.9909309145718765
1982	0.9720535423849412
1983	2.201120979041889
1984	5.118117627304628
1985	3.867980187293284
1986	4.063034617518824
1987	3.7023747140989087
1988	5.3287760695796464
1989	3.152142556940845
1990	2.646877062290585
1991	1.5326585660422154
1992	2.21382744102398
1993	0.9590115371423451
1994	3.917765758132049
1995	2.866527987396367
1996	3.2846230680821975
1997	4.032470085096932
1998	3.6303534820527545
1999	3.1822001254824244
2000	3.518713738472684
2001	1.6497947298290399
2002	1.3114328149686543
2003	1.7258387774703294
2004	3.3270636017920197
2005	2.323309593029734
2006	3.177719250668588
2007	1.653658751716364
2008	-2.072756920096083
2009	-2.6096272048865785
2010	3.935594573233743
2011	1.4641341350288855
2012	1.7734082535045843
2013	1.4325188106381006
2014	2.6532801876833787
2015	3.1888506904539327
2016	1.705579003976851
2017	2.621713204932135
2018	1.9905779335108917
2019	1.6452848707692738
2020	-5.069887361323097
2021	4.839822175750513