Year	current US$
1970	4046004278.5833135
1971	4681686227.54491
1972	5869166450.944861
1973	7794805825.242718
1974	10038214594.750505
1975	12508959420.289856
1976	13951740860.482466
1977	15876976998.904709
1978	19960188802.083332
1979	27794903321.765
1980	31668530981.66628
1981	29490522616.687695
1982	28842432227.775253
1983	25907525522.041763
1984	25673200165.597187
1985	27455210371.81996
1986	37674950695.02198
1987	49364952162.781296
1988	57684636480.50279
1989	65677402670.41461
1990	87184722494.28664
1991	97661945556.44514
1992	112339151633.3496
1993	96326090992.28658
1994	94237853682.77232
1995	108255938083.80038
1996	112370944437.14699
1997	100352272727.27272
1998	104385789063.37009
1999	106604289198.84193
2000	99913634715.29433
2001	103872425717.71666
2002	117826050785.88257
2003	152246270661.5683
2004	183545250228.5719
2005	199957653117.50964
2006	218809440179.9997
2007	260981503485.88318
2008	307167279648.43744
2009	307835454419.9217
2010	293422195550.00055
2011	306088176206.22626
2012	264649764153.5157
2013	269848351325.88312
2014	269862349819.99905
2015	233460373906.6405
2016	235618717308.56088
2017	245096757728.23572
2018	266063146286.27432
2019	262995907639.21527
2020	281375442655.2537
2021	306936486089.14233
2022	288780687180.935
2023	315327126017.65265