Year	current US$
1973	83645131557.86255
1974	110935578884.89532
1975	138333398401.18588
1976	139733017165.8074
1977	146690297846.631
1978	170186486100.0549
1979	185654119687.80664
1980	234852183078.13458
1981	390213011845.0105
1982	366871611195.8734
1983	302487329168.4133
1984	277382579257.30334
1985	283889697332.99365
1986	281753485476.6722
1987	293146984234.65106
1988	307381578377.1739
1989	292262059882.4139
1990	315089027823.26984
1991	324929151598.56573
1992	321645341355.78827
1993	303090240574.91064
1994	294174144425.7532
1995	341440173197.1215
1996	383171585101.7951
1997	397537922425.52795
1998	407162328365.35175
1999	427113274313.93066
2000	458554767038.1775
2001	463188032679.35626
2002	497105118355.0577
2003	547882053981.98083
2004	644581947995.5894
2005	744095497896.1191
2006	904651439819.9244
2007	1051116465570.2666
2008	1253344563792.0916
2009	1285348501441.2405
2010	1454564972944.7644
2011	1447662424576.7664
2012	1559583234086.8516
2013	1708830395861.6333
2014	1878449970468.3518
2015	1868643365086.646
2016	1931219597056.83
2017	2007212693786.2598
2018	2078042744863.5828
2019	2160052355475.9646
2020	2148668772603.0286
2021	2298881389743.21