Year	annual % growth
1966	19.37478186105747
1967	1.8325545642330354
1968	11.825016848063314
1969	18.850785647576657
1970	1.5473669154598895
1971	115.2151257309927
1972	-3.3688705214490398
1973	-10.458636590438942
1974	-3.2786668757252073
1975	10.804847848314637
1976	-17.017058021428937
1977	32.25810057473794
1978	48.84744000827496
1979	-30.944447434676547
1980	46.271232267706694
1981	-12.728786473075019
1982	0.09532863419210003
1983	-11.428659035347195
1984	0.2149213113804933
1985	3.3263815241906656
1986	10.16791736741527
1987	3.782337274441545
1988	8.992000282918085
1989	-9.770914790434347
1990	-7.912494938346143
1991	4.499997206781032
1992	-19.599994826926633
1993	-3.200004835891008
1994	-1.7999965304659895
1995	20.59999327093749
1996	9.467804306821165
1997	0
1998	-1.1000004504823124
1999	-1.30000005518977
2000	-4.100001451614176
2001	-2.5737353291180227
2002	10.805155527906734
2003	16.93002362875211
2004	-5.472385231414123
2005	-1.2688900929168767
2006	-5.875373730148198
2007	-0.8132004988403736
2008	3.748683455070264
2009	9.454917942666171
2010	14.309415666493024
2011	19.968511317618322
2012	10.087202594957787
2013	11.655950514220038
2014	-8.10051427107193
2015	-1.7745576844723843
2016	6.340103929997468
2017	2.28636327381588
2018	0.6235840342173162
2019	3.4140306283124318
2020	6.045418789269917
2021	8.782396579990689
2022	2.75434219630921
2023	6.800389167064111