Year	annual % growth
1981	0.41896210366194
1982	22.711752259123145
1983	0.1433691820335241
1984	-8.840372226950521
1985	20.010469835629706
1986	4.252998910720862
1987	-20.81589957852937
1988	-40.71872906759996
1989	9.968813038349936
1990	-10.495177148147732
1991	27.847292383606174
1992	-29.344632541965737
1993	20.45589261049247
1994	3.880234031018844
1995	-24.337101688945566
1996	31.05287986341989
1997	-31.72886802760216
1998	-1.6689387232839579
1999	17.942495837811535
2000	51.218802293518024
2001	9.05028815700939
2002	34.306768094484426
2003	-2.3200709579320886
2004	-7.853631146189102
2005	3.8735588032410675
2006	9.172049006396861
2007	-11.505148276754909
2008	12.714753217916524
2009	10.862832251755705
2010	4.420670100778139
2011	1.308482552183719
2012	15.454403640086369
2013	-0.2177592489249207
2014	-19.324765375568845
2015	24.188515237793084
2016	17.9218071132849
2017	-4.780484479692902
2018	250.2334232089696
2019	5.090289446587008
2020	2.6815500773716536
2021	-31.07132554762238
2022	20.655590480466984
2023	10.0111648678824