Year	constant 2015 US$
1970	27198594605.766235
1971	27571230753.33263
1972	31440198408.597687
1973	33862147359.7189
1974	34096021494.264732
1975	35547876407.97766
1976	40036746925.700096
1977	41003492818.022095
1978	45318135785.88403
1979	46286741758.809525
1980	48381316523.716
1981	49253322310.63344
1982	49472687816.47202
1983	52980923840.03304
1984	57034783507.28529
1985	61206944300.919685
1986	62567159243.5672
1987	63161392993.696365
1988	67079714787.64076
1989	74573855533.73975
1990	80616389376.87294
1991	85609465743.51549
1992	89638772346.80162
1993	92427777203.67874
1994	100103461816.67863
1995	105495711480.83075
1996	116123964038.44157
1997	125082484240.98367
1998	126722455306.39651
1999	130455389066.85948
2000	135547917743.10213
2001	141757238813.68185
2002	140931983052.59888
2003	140462870724.39798
2004	142088581171.8507
2005	142881223519.68576
2006	142065392166.9938
2007	143172884158.31345
2008	144759408907.71927
2009	138486225069.75296
2010	138958065516.1723
2011	138243918569.80463
2012	141086369742.68878
2013	138756680789.50082
2014	144076511315.49026
2015	149733264441.45905
2016	150313857600.49594
2017	152712121525.26602
2018	150364327787.53738
2019	153545561641.00436
2020	149969990699.5969
2021	159104970548.7237
2022	166263924770.0733
2023	168673101167.7172