Year	annual % growth
1971	9.044301868966784
1972	19.782832382761356
1973	-1.6388715485713021
1974	12.387904530026844
1975	4.503680759794108
1976	2.290047331015188
1977	1.34140140562387
1978	8.339323002907378
1979	4.658913955915537
1980	6.019787625194752
1981	8.285067919639516
1982	0.849854254681631
1983	4.048076815732742
1984	2.0265213238403987
1985	0.9580097051604639
1986	-3.347536517638588
1987	6.319952967361104
1988	1.357208196384903
1989	2.4839749848950277
1990	9.666692414767056
1991	1.434407317931985
1992	-1.4754457447725144
1993	-0.6130850025103456
1994	4.738968082425828
1995	4.242357970368403
1996	7.619682801976097
1997	7.441333759337709
1998	5.666438608735973
1999	5.955802108368218
2000	2.2445918752096077
2001	11.964529992927424
2002	1.8443113587938313
2003	5.186409428910537
2004	4.658072252571685
2005	3.2932080988103536
2006	4.414091776626151
2007	2.894065927107121
2008	-0.3522959165927517
2009	7.879348011730187
2010	44.28944742608624
2011	-4.781563454536894
2012	2.131386705653469
2013	1.6107647079012963
2014	7.280627871426475
2015	5.524507188414802
2016	2.853834892131985
2017	0.529543495587447
2018	2.158175911100301
2019	2.264124527524089
2020	-7.060484376107851
2021	3.6291159094195393