Year	current US$
1970	284759994.50899994
1971	315897541.17460006
1972	348440035.399
1973	376562895.062
1974	1901760340.2929
1975	3302245707.898239
1976	4318014568.9772
1977	7013375127.668494
1978	9852145598.845272
1979	12854558994.89857
1980	17697160157.032146
1981	17940017503.41127
1982	19826187339.84766
1983	21422503768.78832
1984	20655833174.428738
1985	19773742395.94167
1986	20130288702.130653
1987	23212668076.700493
1988	23065300961.433224
1989	24989773783.466366
1990	29205556743.522797
1991	32196001789.636223
1992	37738169029.148285
1993	39606041256.213875
1994	48702983969.620285
1995	49317006359.49686
1996	52349315194.56918
1997	62085510717.631905
1998	60219586712.066414
1999	65500688891.5725
2000	72857547927.90094
2001	81385557187.0613
2002	96790132492.82037
2003	121468164792.35004
2004	138946994044.73508
2005	169495699826.87054
2006	199254489583.47293
2007	239947786465.86646
2008	279744158860.9277
2009	269714342408.3468
2010	298381407822.1413
2011	335060474846.55927
2012	358938557662.80707
2013	376997124458.6518
2014	406531265484.82043
2015	406263357142.431
2016	396237908168.5319
2017	435446513595.073
2018	472732513017.2724
2019	493239425377.4375
2020	497615359002.47485
2021	563393802777.8129
2022	614342692356.0673