Year	current US$
1970	10327798993.825748
1971	11789303805.123491
1972	14237042389.966747
1973	19321213030.83923
1974	23422344510.45548
1975	25929539766.784176
1976	29008980636.901905
1977	33802401913.875595
1978	45251477628.635345
1979	51212390689.84182
1980	56770654055.02178
1981	54152532328.68343
1982	51060349209.47643
1983	49408192558.71564
1984	51768415116.823425
1985	53013588376.54145
1986	69923799544.16588
1987	82090040906.65236
1988	91340876785.34819
1989	93262377895.95941
1990	109915025914.19522
1991	107067605997.2106
1992	114018210069.69138
1993	111111344071.46724
1994	120744704248.00761
1995	141203860465.11627
1996	139537131067.96118
1997	137060242541.16998
1998	139575012415.50558
1999	139348313140.72693
2000	143622369729.98578
2001	143872229201.2325
2002	150195660849.48032
2003	172784832553.64966
2004	207207253719.34058
2005	225263859620.9444
2006	250005789599.61716
2007	302064722592.4692
2008	358112276798.0796
2009	321497078393.52997
2010	388280802445.1611
2011	475707113598.2132
2012	465237594281.16394
2013	508970903327.5012
2014	474699970370.0267
2015	443048390064.0173
2016	459636103721.8012
2017	461255257229.4202
2018	489600609479.6586
2019	483067666222.2334
2020	475588653393.8096
2021	579859246134.6965
2022	629661502933.7606
2023	666597864194.3706