Year	annual % growth
1971	2.2297113796896753
1972	4.292732158344265
1973	7.043693604624778
1974	-5.4541333994591525
1975	0.9178056674721944
1976	6.459303760831631
1977	2.589749088307272
1978	4.092660959273701
1979	1.4467490984327043
1980	-3.6007334896931127
1981	-2.8993412950726594
1982	2.2990656367608153
1983	3.1228368113337126
1984	3.5077117502098503
1985	4.008783486867529
1986	7.326191585636451
1987	0.5902647668867758
1988	-1.2651373443068081
1989	-0.2707333434641441
1990	1.295190532620012
1991	0.7551368827243721
1992	3.3517677137878934
1993	0.021418157078983313
1994	5.551222758101787
1995	3.4644344567918495
1996	3.263691210697232
1997	3.0706748299133153
1998	2.7217818916662964
1999	2.7489932032048756
2000	2.136007048915147
2001	1.5140532872605093
2002	0.6141942571930628
2003	0.5656228804167682
2004	4.217439373657442
2005	4.172992355776927
2006	4.30755092881671
2007	-0.6528709463071749
2008	-0.6209050123603532
2009	-4.128536839311451
2010	4.797297130501761
2011	0.75838154314836
2012	0.842025527429783
2013	3.224632670219748
2014	3.577375351551808
2015	2.6288315753760116
2016	2.3625275118450446
2017	2.7006775572239405
2018	2.062961065295113
2019	1.1890679238703257
2020	-0.5379665807217577
2021	6.393739772037492