Year	annual % growth
1971	3.1536133538191393
1972	6.007506295436656
1973	6.5733926505290725
1974	1.3566095331264876
1975	-1.4832835408106178
1976	5.556559360144945
1977	-0.0492557421879809
1978	2.764910039873243
1979	1.808690991532842
1980	-0.7031405520380787
1981	-2.616453863091138
1982	-0.12511046897229505
1983	0.8333549458053255
1984	3.1839659839139927
1985	2.8507738619740053
1986	4.769698148475584
1987	3.084154027429591
1988	5.673611644362509
1989	3.2093791987354905
1990	2.5140022032720992
1991	1.7496142313717655
1992	1.9970058010546126
1993	0.2976680402864105
1994	3.581326005737864
1995	1.3800968536226321
1996	0.25996401029296123
1997	3.304522214591856
1998	1.7877618598507468
1999	2.1557667048743667
2000	2.451457065942435
2001	-0.3419126691721459
2002	1.4280568433637058
2003	-0.09667694898054435
2004	1.9284774440895092
2005	0.7706247647164588
2006	1.094880412009715
2007	2.8171922541499157
2008	-2.1219685536843116
2009	-2.201570799353931
2010	0.4905055301424426
2011	-2.6170483604523866
2012	2.6187317782686534
2013	0.5340986588813905
2014	1.1927456748493483
2015	1.7846446367287996
2016	1.1278134554154775
2017	0.8705685677050212
2018	0.5634497567587431
2019	2.40955803248049
2020	-7.002079381041142
2021	5.141311210020831