Year	current US$
1970	283000000
1971	396177015.3
1972	455540775.29999995
1973	467262161.25
1974	425501348.48999995
1975	1088507453.82
1976	1459498691.56
1977	2738463787.0099998
1978	4556454875.99
1979	5760714267.489999
1980	6532629138.83
1981	6071648223.85
1982	6024183219.56
1983	7159234573.570001
1984	7373492457.650001
1985	6427408061.33
1986	6651974353.12
1987	8109344383.42
1988	7838672004.86
1989	7374614318.97
1990	10484481097.869999
1991	11826037401.050001
1992	15046543035.039999
1993	14486970846.05
1994	13089742675.02
1995	12084970280.851881
1996	11300645845.683577
1997	11679147592.95249
1998	12060903899.621975
1999	11659061294.02075
2000	11572043873.93611
2001	13002645271.14252
2002	15890541148.845358
2003	20434850812.827236
2004	23590599907.204117
2005	22482131322.470306
2006	24293318768.823368
2007	29250362021.950615
2008	33085181644.09371
2009	31026790106.00944
2010	37038923610.91575
2011	38834194772.18028
2012	46112578003.44919
2013	47620026471.21082
2014	53567555144.9632
2015	50172265993.94615
2016	49602085995.309746
2017	56295200948.716095
2018	57142684490.295135
2019	59290308298.413475
2020	61755958990.15909
2021	70527217645.95148
2022	67160184554.45329