Year	annual % growth
1972	3.7392449385074116
1973	1.816506879322759
1974	-2.764551098918858
1975	-9.127483232012708
1976	-2.869352270849319
1977	-1.7920158437591596
1978	1.2525890401124258
1979	8.866813461939785
1980	5.6178665649416075
1981	2.203423306351283
1982	-7.273277151747649
1983	-7.308463762312826
1984	2.7075194876959188
1985	6.517977008987998
1986	-4.1146461394008185
1987	-4.930612259169678
1988	1.3817968798873324
1989	-9.002507439671646
1990	7.187537379324425
1991	2.4415449340728514
1992	-6.526934303832817
1993	4.564054996753583
1994	-12.496516147646872
1995	3.8702146920603013
1996	3.679863115715264
1997	4.3490968298278005
1998	1.1143733121344894
1999	7.279570312290389
2000	5.521782237342009
2001	4.242665603738914
2002	5.033023125809692
2003	1.9399150927223587
2004	3.390514213434173
2005	-2.5660684243129026
2006	0.7096993644117902
2007	2.5445908446681216
2008	2.201189696870969
2009	-0.6251758712712103
2010	-1.0077963355832935
2011	1.7192940884472705
2012	3.115217856090723
2013	6.7101337684539715
2014	3.1391021444210168
2015	0.15202502717728805
2016	1.444265639105339
2017	0.702910147094471
2018	3.204617405248669
2019	4.904826421079704
2020	-0.13496292744625293
2021	5.34983431285616