Year	annual % growth
1971	14.815774833549227
1972	22.869413182659358
1973	23.45768024549166
1974	24.232372968914248
1975	19.288746811884522
1976	23.854262084130994
1977	-0.02202616493075027
1978	-17.455872821556937
1979	2.9583647749234103
1980	-19.951013222855735
1981	-0.7974078839565095
1982	20.350893753947076
1983	13.63334512568413
1984	-9.000928474479565
1985	4.173153438402181
1986	-9.576257324528598
1987	-1.7095621740613893
1988	-17.498342979600565
1989	3.760560280312248
1990	9.976945756271277
1994	-1.045521308528464
1995	-1.4889086355582322
1996	8.699753093925764
1997	3.1890638376422658
1998	0.7821370003572099
1999	8.478428733906426
2000	1.7631972337054123
2001	13.16949828881559
2002	18.392296535596245
2003	6.067584687486828
2004	3.685961202013658
2005	10.270746407838516
2006	5.266265930801481
2007	14.98074824823017
2008	-3.5270671045572755
2009	3.0960735583540355
2010	9.965636437601916
2011	2.5429739632389072
2012	-11.137557526485011
2013	-2.8335521082673836
2014	-1.5432076481524177
2015	-16.578495069193963
2016	19.99531505917082
2017	-0.5043674269570886
2018	-11.4347048646909
2019	-6.695735099834721
2020	5.722268979776985
2021	7.472178446162431