Year	annual % growth
1971	70.64861791992516
1972	-23.401704047804287
1973	32.80242542521407
1974	23.27945625620748
1975	-5.240617196976714
1976	-21.723600465777267
1977	28.295620103565653
1978	-13.290896373403896
1979	3.5214980651844456
1980	14.259609247920778
1981	6.617465587993479
1982	10.757321607999913
1983	-39.5190642442822
1984	39.1296801530645
1985	-11.757597415414367
1986	-9.714788966161123
1987	31.40939425163188
1988	11.76794162241275
1989	-16.2332664816432
1990	-0.4225424129238462
1991	12.6214845418082
1992	-13.274944972603066
1993	-2.591583489139964
1994	-7.228471515968309
1995	7.410073039343246
1996	17.939533407144054
1997	11.238080915036065
1998	31.295433062111528
1999	-3.791008968991349
2000	13.08044416379748
2001	-6.455957820637252
2002	-11.276698351384454
2003	8.428715939150734
2004	26.823163294442963
2005	26.62865118716971
2006	29.012684362494554
2007	-12.216838715042826
2008	-16.85334675554664
2009	-48.28701425509475
2010	-8.830955230642047
2011	13.327796701221857
2012	4.592086688390822
2013	0.46997538977713305
2014	17.56568059260522
2015	20.992390424742084
2016	18.28188973984075
2017	9.574172636664045
2018	3.5775842189785294
2019	-6.177995433381639
2020	-6.394721056829809
2021	13.735539663310007
2022	15.19957244485181
2023	1.6812197519279408