Year	current US$
1970	15649438327.0595
1971	18457144287.9728
1972	22005689534.8217
1973	25985789929.6801
1974	30558705004.6615
1975	37353154362.7049
1976	36831596093.6658
1977	42097160170.8342
1978	54045406820.2976
1979	71000007258.4947
1980	94001031450.7614
1981	91779830310.9828
1982	85711015819.9585
1983	79709551255.8254
1984	74430034966.1694
1985	77433772983.809
1986	94711867036.0046
1987	115766261163.28
1988	140546177264.186
1989	140879361436.325
1990	169889914344.69
1991	181948410651.772
1992	184701909161.595
1993	162034629738.585
1994	170025980339.02
1995	180337522386.957
1996	186752885130.798
1997	199796561032.503
1998	210141814269.679
1999	218861025731.847
2000	217565441085.616
2001	220902547882.939
2002	242622901744.294
2003	278768979585.539
2004	324941413305.126
2005	340963636459.523
2006	366395584155.668
2007	421512605004.639
2008	415202205758.892
2009	367206730080.268
2010	365903210059.395
2011	390740336337.337
2012	398501224091.86
2013	405869939638.478
2014	441313025053.715
2015	424331095298.784
2016	392371695018.164
2017	394742566891.218
2018	425578728246.281
2019	424528784241.655
2020	436702801017.615
2021	474345428900.127