Year	annual % growth
1971	3.1602587494526944
1972	4.278108479535248
1973	4.505610580439054
1974	-0.8587394662654191
1975	-0.8518413578444353
1976	4.7939184626744265
1977	3.2400540604863295
1978	4.1524379063128265
1979	2.616251043811829
1980	-0.8666240963469676
1981	-1.8291758507526907
1982	-0.46953648643324186
1983	2.2991553883137072
1984	2.7743334963115984
1985	2.5363975932631178
1986	5.51128784695581
1987	2.107688276683433
1988	4.4130884314086245
1989	3.360023854501577
1990	5.557830294826701
1991	3.7936077151927066
1992	2.417773179150501
1993	-1.3716993254559355
1994	2.4262281116496354
1995	1.7019702098206864
1996	0.7149426156254322
1997	1.0438755037447152
1998	2.143888843592336
1999	1.8309495267627938
2000	1.415482027369336
2001	1.4389274597520085
2002	-0.3275719286308316
2003	-0.23913445705036906
2004	3.2211807849702296
2005	0.295353819291293
2006	4.62674739956266
2007	2.816374679995562
2008	-0.8524921893811097
2009	-4.233555818302321
2010	3.715489449361712
2011	3.901709452411069
2012	-0.17541465656702826
2013	0.5582765555768816
2014	2.5402533553525473
2015	2.7594968390817485
2016	3.2239939329896288
2017	2.2314561358909373
2018	1.3567061091025892
2019	0.8700836732670183
2020	-4.725590590647485
2021	2.071026637572615