Year	current US$
1975	187471907.33132026
1976	223361113.88362113
1977	252629559.49770778
1978	281907224.18336403
1979	347685576.4928156
1980	429920946.6514195
1981	490933227.2659474
1982	508924576.144782
1983	529160244.61790884
1984	582359667.8764979
1985	643713021.4289266
1986	691194749.6643962
1987	769353154.6760802
1988	807338537.2644559
1989	892706209.9139861
1990	1428578531.2981656
1991	1424750161.5870333
1992	1399650000
1993	1456868691.890817
1994	1547606025.9533637
1995	1599612191.120171
1996	1721374235.569035
1997	1797593596.1815743
1998	1984338487.545369
1999	2083726942.773331
2000	2180300000
2001	2184000000
2002	2289250000
2003	2302550000
2004	2509450000
2005	2747550000
2006	3058627300
2007	3368052450
2008	3471302800
2009	3297818350
2010	3320915500
2011	3349193800
2012	3325091150
2013	3438275200
2014	3429413850
2015	3478703900
2016	3543266200
2017	3618738350
2018	3691929500
2019	3904242600
2020	3465573750
2021	3546586250
2022	4257105150.0000005
2023	4625654044.6535845