Year	annual % growth
1971	-0.7613018436043006
1972	-2.414745617214038
1973	5.098681853563306
1974	-8.56777811194192
1975	2.8623073062569233
1976	4.545322375531697
1977	2.4431389668890375
1978	4.688187944752158
1979	-4.999334657552794
1980	7.715603261566372
1981	-2.9068341061347525
1982	-1.0187264708850279
1983	7.602458716130542
1984	-0.6038492051286681
1985	1.252823653562146
1986	1.7188030050468797
1987	4.042287905149621
1988	5.15414989620821
1989	2.8617713326385683
1990	4.440286546236564
1991	-2.115623659108323
1992	2.3270099332182212
1993	5.205052490646693
1994	2.996660925813032
1995	2.791483836649462
1996	7.8194890864128155
1997	0.6938625630016162
1998	4.371620754378867
1999	0.9701178467806528
2000	-0.34828877576946127
2001	-0.37463196098849494
2002	2.392095443501347
2003	6.483464960828144
2004	6.703363917480772
2005	6.464740718714097
2006	6.337769790719676
2007	5.67016939810425
2008	1.4034664539476154
2009	7.94552676667648
2010	7.040519075377929
2011	3.5835286676878013
2012	3.6608551882265914
2013	4.486268364752746
2014	4.8192761305452905
2015	6.9961511544136386
2016	7.321332419954345
2017	6.681578008554197
2018	4.781378135630064
2019	2.462776490734342
2020	-6.116200044621394
2021	8.46149501199453