Year	annual % growth
1972	6.538881373606827
1973	3.8484811060720716
1974	35.69575590136108
1975	-28.073062466427118
1976	34.08837147383633
1977	-0.1315948171788932
1978	-0.21802427140026737
1979	5.631095547133967
1980	-0.888231323355555
1981	-3.357500966411365
1982	-1.914444747630725
1983	-4.914485246174365
1984	21.666418902931767
1985	10.174051571880582
1986	1.5817889079395826
1987	-0.6459289407540183
1988	9.997705584936469
1989	6.001104338085156
1990	6.268054183073033
1991	-6.171394362892542
1992	2.5458566682461594
1993	-28.26631931054635
1994	6.807990917799273
1995	6.775553462533736
1996	31.044703202208638
1997	7.761173283306206
1998	7.166194957284617
1999	4.9702470995115675
2000	-2.6738353800817265
2001	0.39917722508772613
2002	5.513707952537487
2003	3.1944111943578406
2004	-0.11631950863167617
2005	-6.578398978010682
2006	5.354670336544842
2007	-2.901151590570535
2008	6.63624030127157
2009	11.628105195966128
2010	5.073010146882311
2011	5.306757828349745
2012	-5.452315940523604
2013	14.88350701291641
2014	9.600447161988356
2015	13.456331895201188
2016	42.18518469998827
2017	4.9302649974131185
2018	9.188573864139912
2019	7.648239365129015
2020	-0.6562507805478504
2021	2.528079696013293