Year	current US$
1971	42016.4354
1972	48828.0915
1973	214453.9356
1974	4712150.6487
1975	18192758.061499998
1976	43411784.2532
1977	53271235.7732
1978	73234311.8813
1979	93737645.3927
1980	108253594.6348
1981	119863165.9183
1982	155028169.0368
1983	134708193.423
1984	137879685.16099998
1985	150898415.94840002
1986	165307990.55330002
1987	279558156.4611
1988	376555694.7638001
1989	410172260.898
1990	477723658.1961254
1991	305774797.52896994
1992	292340364.6998016
1993	347110343.88739014
1994	321567398.1663497
1995	1687146878.2434833
1996	1803119714.6603682
1997	2396307690.712254
1998	3304387053.198027
1999	1230355307.1466734
2000	1494433367.0188768
2001	1712259963.1695757
2002	5218160882.839775
2003	5299276510.443776
2004	8281579863.211122
2005	9243157784.498089
2006	9816937418.630589
2007	11163791935.454441
2008	12366543990.45839
2009	15404599150.64764
2010	17036962891.415571
2011	18634527740.54637
2012	19037860630.907673
2013	20029144296.80722
2014	24198340859.060467
2015	26494799063.028255
2016	27288455899.149666
2017	36873395092.85581
2018	39145194388.929634
2019	42171117629.9233
2020	40986199824.683136
2021	44941951666.649086
2022	43179380563.7982