Year	annual % growth
1967	3.8709608304358767
1968	2.3991953792976517
1969	2.612688373144323
1970	-19.45436298135604
1971	18.763744155148416
1972	3.138362516990483
1973	-5.790631146468172
1974	16.639509589961293
1975	-5.201788259485298
1976	-11.555982558055888
1977	15.494240829179233
1978	3.5245066397395277
1979	1.1330513743710782
1980	0.6657520751982986
1981	9.779450825839618
1982	8.789586965572212
1983	-6.505177787355905
1984	21.323338833479298
1985	-1.3201946882138742
1986	-0.7525558769786898
1987	-9.589397719004538
1988	1.3297248038443286
1989	14.25113226693955
1990	5.715804409628049
1991	-1.3069295928330718
1992	2.7275838537557604
1993	24.332443714977515
1994	3.3221153046993663
1995	5.262562956608093
1996	2.7216578620061824
1997	3.3632995313401324
1998	1.5091645213496747
1999	-1.2167000938844268
2000	7.080707999829897
2001	4.333429351591562
2002	-4.809953236405335
2003	0.1320833661106633
2004	2.5555968784904053
2005	-6.167493943670664
2006	4.370253605216433
2007	6.4174567459463105
2008	-24.64431007605461
2009	-3.416677710182128
2010	30.21692844350912
2011	-10.732627464025867
2012	11.450109314683061
2013	-4.629733355911895
2014	17.09810353602319
2015	-12.520393670574478
2016	-15.28896481923043
2017	14.040640048527592
2018	-1.3816527459334367
2019	1.9079199052916636
2020	2.3396066955773165
2021	-5.177521023150035
2022	-6.798893254057759
2023	2.0516306379209084