Year	annual % growth
1971	5.374470883941427
1972	-0.4388998118579508
1973	3.792196147501386
1974	16.49025831320681
1975	13.914941867212121
1976	6.8618725999644
1977	6.609322142707768
1978	1.5249388344782915
1979	-0.9506347118210101
1980	5.256162022698447
1981	7.653921885185724
1982	-0.42727233701731393
1983	-7.222271351042636
1984	1.2842555498979777
1985	7.133125190535367
1986	-0.4879676398170716
1987	-1.4408180537547821
1988	-7.227339624022477
1989	-1.713873159721075
1990	8.37561492844101
1991	14.093110157573548
1992	5.394020259865755
1993	-6.005624938403315
1994	4.38263212478094
1995	0.6441967259151369
1996	1.0055174568149
1997	8.000852780981631
1998	3.0491222997466707
1999	-12.274308155085407
2000	5.904842951471693
2001	-3.469102856962806
2002	9.993323899360234
2003	-1.1688528778534106
2004	-4.200375945724801
2005	3.4129037317389646
2006	5.728402581644843
2007	6.235109023275669
2008	11.899287530851325
2009	8.16463789671917
2010	0.16267991237405965
2011	4.669950015651182
2012	4.45267699520366
2013	7.717058054487367
2014	4.8557625671272575
2015	3.6528042780939103
2016	-12.991974851741034
2017	12.409200530473868
2018	-2.9607891031000975
2019	0.7899397489547368
2020	-4.957431174828713
2021	2.126091837855327