Year	annual % growth
1971	-6.384117645866567
1972	9.890694290018203
1973	10.147468098629588
1974	14.220874452250243
1975	-12.295262035753069
1976	10.678012524057095
1977	-1.030144220514444
1978	4.9566251783610795
1979	1.4245570854326814
1980	2.370127368084752
1981	3.2856470743812594
1982	14.61018339133939
1983	4.307408956720039
1984	2.350448639648178
1985	4.625294078442323
1986	5.900669137342547
1987	2.9219117039532563
1988	7.046529570694915
1989	8.230148600818325
1990	4.007041762448679
1991	6.891569318206564
1992	-1.5716744753736123
1993	3.686710266395508
1994	-0.5188985539332123
1995	3.844428024334846
1996	1.5627638958697503
1997	4.437980718156794
1998	-1.4316820317169885
1999	7.386888027059982
2000	1.761231560284699
2001	0.5076944261254539
2002	-3.1815198147876202
2003	-3.2414399360507673
2004	16.282266640921733
2005	3.30245628065515
2006	-5.881191976286587
2007	13.385650133990225
2008	-8.248164639753583
2009	-26.959462959424798
2010	14.007215805524908
2011	1.0212024052489426
2012	12.970025163239114
2013	-6.111103948676018
2014	3.5293439529150703
2015	-13.49580050195513
2016	4.331891833001805
2017	8.348155207916719
2018	-1.032948322090519
2019	-7.581810496012963
2020	2.5902660658127132
2021	10.57717570863177