Year	annual % growth
1972	3.2863123930823406
1973	5.138092588893528
1974	-0.32766746120938706
1975	0.5070318381143579
1976	6.858027376290508
1977	11.08712328180755
1978	-0.41261002500066013
1979	-0.015767470122312943
1980	-1.065077978063428
1981	-2.8395168953236407
1982	-5.95229072395982
1983	-5.727790968847685
1984	-3.0911181740359694
1985	-3.4212695235974877
1986	0.022818595606437952
1987	-3.3057550252501358
1988	2.3723430782929427
1989	1.4105843239503173
1990	-1.434429357286831
1991	4.664215591496259
1992	-0.2703105888071775
1993	2.775496607484513
1994	1.9504601336268905
1995	3.0380318079837707
1996	-1.024862489521098
1997	3.1284091863744976
1998	3.9952621813019107
1999	0.16512734416924957
2000	-0.7975138685562371
2001	-3.4446112569197993
2002	-0.31912882307236146
2003	-1.0382851332238943
2004	-0.7134282235435023
2005	-0.37825621180761004
2006	1.872795632535329
2007	3.191404433304413
2008	0.8360298147908338
2009	0.5998245025943021
2010	0.2957565499734187
2011	2.8108915682238518
2012	2.45467046572314
2013	1.2678469306210758
2014	2.5132964731607217
2015	5.080995094778885
2016	0.9451741406895025
2017	1.181057365992075
2018	1.7527873572608144
2019	4.181339710380129
2020	-1.6330674741950162
2021	2.573912879472644