Year	annual % growth
1968	38.4411925192731
1969	6.922241032398162
1970	-6.088179797365129
1971	-1.3991631956680664
1972	-3.979174600844132
1973	-4.636976832196353
1974	-5.402052445256416
1975	-13.203330308283554
1976	1.76869549683083
1977	-10.272244933338484
1978	-23.681168452999117
1979	-3.4124560040385035
1980	-22.02974102373358
1981	-5.060566264626374
1982	-17.611368357247954
1983	-10.532945744194222
1984	21.152388198779732
1985	2.538887891065073
1986	22.231909323325837
1987	-11.98288159641129
1988	-33.54943274874742
1989	43.414634149486005
1990	-18.7148057077692
1991	50.64117228801064
1992	-5.972222839607696
1993	-13.36779165062103
1994	-23.82040856047496
1995	-36.10611751018311
1996	76.39426355864904
1997	-25.93689950827209
1998	-14.69855642913231
1999	-1.278878942658153
2000	21.354713353510846
2001	11.748343258619599
2002	36.72314084520272
2003	65.29788281634663
2004	11.481605656984371
2005	8.635692555476027
2006	7.724320805892731
2007	1.1175723491107448
2008	-18.52326382471057
2009	11.013781405156806
2010	19.490616248449967
2011	-1.4423637508453595
2012	152.1847579611555
2013	40.34842899085584
2014	60.46255327143987
2015	-55.08935552367607
2016	21.718246507287617
2017	23.275023130421275
2018	-34.86702456516363
2019	-1.6219284055987657
2020	-9.83733623971365
2021	1.8822788710250506
2022	51.42755482574671
2023	16.329479768786143