Year	annual % growth
1971	3.4905475343763896
1972	4.8335715757146716
1973	5.544601694993474
1974	0.30444888111891544
1975	-0.6125902529231411
1976	4.5993128631232025
1977	2.587273073931101
1978	3.8519421077275666
1979	3.2234973216890097
1980	-0.12438620482143392
1981	-1.3258924763255493
1982	0.7372824494486565
1983	1.748995989900905
1984	2.531796840382029
1985	2.556066502446214
1986	5.387473545420974
1987	3.082042773656198
1988	4.378630384246492
1989	3.551721184285867
1990	3.4749890771923475
1991	1.9428289740441897
1992	1.3585249728658653
1993	-0.899964187584942
1994	2.6478442501136783
1995	2.829435383117911
1996	1.9334794662681816
1997	2.656982607233502
1998	3.464949279800763
1999	3.023312729683397
2000	2.5670706477834955
2001	1.969946464680831
2002	0.9278916383235014
2003	1.0483823631340243
2004	2.8378949710812833
2005	1.694885935275721
2006	3.3679331231593466
2007	3.041903837893585
2008	-0.7283940339803365
2009	-3.7398297609335174
2010	1.8679174754693548
2011	1.1416424102244065
2012	-1.039832488344544
2013	0.35065377749519655
2014	2.031401203679934
2015	2.7143334142740514
2016	2.72164480073522
2017	2.629084819402493
2018	1.9655862151053185
2019	1.6791003307595531
2020	-6.826988047690136
2021	5.454688307284442