Year	annual % growth
1971	1.9390451528380908
1972	5.310010775875014
1973	6.044804204897815
1974	2.2953499647276487
1975	1.0448799109179703
1976	4.192029435520837
1977	0.8787516009434881
1978	1.7186947275684048
1979	0.0751209307356504
1980	0.3045419171506154
1981	1.9234861048838923
1982	-3.978557730202752
1983	2.3545609405396704
1984	4.555360616303034
1985	3.8171027472068317
1986	1.0480454245022486
1987	3.8086918527924922
1988	3.305438862293286
1989	0.6601430643063679
1990	-2.3683011113100747
1991	-2.974484467188404
1992	-1.411218709664368
1993	1.3713333429703312
1994	3.2034927033862033
1995	2.9604366683579
1996	0.4643726210481276
1997	3.2273737847907427
1998	1.1829361313619131
1999	5.137274184905834
2000	5.838082924405114
2001	0.0063883170675609335
2002	1.883527976935511
2003	2.2371860773329217
2004	4.627156515143753
2005	2.8066190329473244
2006	3.7631413477392073
2007	1.9952154858957414
2008	0.218344750481549
2009	-7.2308146083758515
2010	4.384422850209006
2011	3.5258561129198256
2012	0.3164978756926189
2013	1.6034004400178503
2014	1.1721145194149187
2015	-3.0716576441023165
2016	-0.5014517633006221
2017	3.868557445734197
2018	0.8723120387329857
2019	0.40669812432498986
2020	-8.393321685607518
2021	8.279005961999616