Year	constant 2015 US$
1975	139308803.46544436
1976	137101521.76971593
1977	147270811.28234422
1978	192888106.5407766
1979	251354974.71619344
1980	296906578.5044524
1981	302096330.6589355
1982	276581129.35733795
1983	252865910.02881408
1984	297497812.2355559
1985	320687478.78734916
1986	329398384.0635875
1987	438370112.5975222
1988	614572176.1588875
1989	760371462.8027712
1990	815737607.4653596
1991	797474927.7907896
1992	763734949.7155493
1993	749466270.5575117
1994	740666312.563867
1995	786836410.2911053
1996	788024302.8501118
1997	930613363.9513396
1998	1027053372.474325
1999	1155187998.3683522
2000	1177884081.871782
2001	1238392983.2960806
2002	1289934879.6398149
2003	1359895067.924371
2004	1494332589.3992376
2005	1522164779.478165
2006	1627994136.7101307
2007	2167813869.9219112
2008	2405496410.1725073
2009	2476539625.433215
2010	2603453486.673805
2011	3368016449.113241
2012	3564544840.3401237
2013	3461875399.5755553
2014	3537830797.9115276
2015	3667277513.892794
2016	3924208179.0869436
2017	3743564105.6373873
2018	4066306942.72759
2019	4480046804.1671095
2020	4067315406.409889
2021	4079011272.2996697
2022	4069059932.0902267
2023	4238901207.749748