Year	annual % growth
1971	6.520134726955561
1972	3.2407307670500103
1973	6.498500085118295
1974	1.8241017871464322
1975	1.2867948383658643
1976	2.2131062820240857
1977	1.4391781390332739
1978	0.8959207132565723
1979	3.0305405390898414
1980	7.641386985139093
1981	4.910111255498919
1982	0.5930256985513722
1983	1.1434827232525322
1984	6.131914148596152
1985	5.414544924072629
1986	-1.0841422221569985
1987	-1.6871203712228038
1988	-3.3179581938001235
1989	-1.1664261281995323
1990	1.1888684640234572
1991	5.774316240320161
1992	1.8188875001627736
1993	2.2205242573297284
1994	5.199969226470188
1995	5.481589793198637
1996	5.357112027518269
1997	8.61425702061544
1998	3.0993892738551523
1999	2.636711395723566
2000	7.897034799632976
2001	4.907426302745037
2002	-1.3279665261289466
2003	2.028014397543103
2004	7.33559152668002
2005	10.426301529971397
2006	6.436525858190478
2007	2.335334292737002
2008	2.287407551161394
2009	-6.8071112058261605
2010	5.041973600171218
2011	2.413848649339755
2012	4.429249296331946
2013	2.083004709879276
2014	1.6688995784980705
2015	-0.7373122129083498
2016	-1.6178841401108741
2017	2.5544075757271116
2018	3.1426579697099157
2019	-3.2475410155880695
2020	-7.529732404863893
2021	15.72143281059266