Year	current US$
1973	1.1773478014774832
1974	35.55089397704432
1975	57.566977147195196
1976	42.212226993801394
1977	37.44111363788965
1978	41.79374277288734
1979	53.32983860018656
1980	90.24934694143226
1981	84.48022796094638
1982	69.55787549053949
1983	47.955948259380044
1984	35.89264869750446
1985	49.501377482896864
1986	111.4123590280111
1987	119.3522425748224
1988	151.2366676446295
1989	136.21795041608706
1990	136.6380104861815
1991	141.2484510123763
1992	160.1278829270513
1993	120.48828632368401
1994	110.75615991679334
1995	417.25786422170023
1996	230.29136140365912
1997	51.97941875127288
1998	180.96614415461917
1999	144.65546533723585
2000	55.353959483845074
2001	71.45308370710465
2002	40.28206409573715
2003	55.43374457091019
2004	93.9542476884955
2005	70.15163940196531
2006	43.07753229230671
2007	579.1164396265773
2008	231.42609128907412
2009	253.91477958529134
2010	154.15157519549987
2011	163.38095755298195
2012	76.8853605064321
2013	79.29269853665583
2014	92.50598944293203
2015	126.78199132247704
2016	86.06777729546238
2017	112.36486993412727
2018	172.39577529212582
2019	805.1542388484388
2020	727.6932428860042
2021	1210.750294203351
2022	149.0168138984704