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	2.86177133263854
1990	4.440286546236578
1991	-2.115623659108323
1992	2.3270099332182212
1993	5.205052490646651
1994	2.9966609258130745
1995	2.791483836649462
1996	7.81948908641283
1997	0.6938625630016162
1998	4.371620754378853
1999	0.970117846780667
2000	-0.3482887757694755
2001	-0.37463196098849494
2002	2.3920954435013613
2003	6.483464960828144
2004	6.703363917480772
2005	6.464740718714097
2006	6.33776979071969
2007	5.670169398104207
2008	1.4034664539476154
2009	7.945526766676508
2010	7.040519075377944
2011	3.5835286676878013
2012	3.6608551882265914
2013	4.486268364752746
2014	4.819276130545262
2015	6.9961511544136386
2016	7.321332419954359
2017	6.681578008554197
2018	4.781378135630064
2019	2.462776490734342
2020	-6.116200044621394
2021	8.46149501199453