Year	current US$
1976	7638148760.330579
1977	10976512396.694216
1978	16416247933.884298
1979	20523917355.371902
1980	16416997664.349537
1981	17881899279.251686
1982	20702695940.35817
1983	26402101305.926163
1984	31296082934.500015
1985	32456032190.064598
1986	41385792126.35211
1987	57951619030.96098
1988	82665436434.27884
1989	95610559930.7058
1990	110586899653.38739
1991	129076914826.72813
1992	135574104124.19997
1993	149990142537.08994
1994	175696140622.70288
1995	213502681419.97137
1996	219451528778.1155
1997	204621360047.94336
1998	144605981580.39532
1999	175999180890.90604
2000	195287829832.46497
2001	174908475690.35532
2002	197296764924.5621
2003	231768452725.58853
2004	281277984927.381
2005	315675177014.87537
2006	346408870833.0257
2007	392280132232.46136
2008	348993311481.66406
2009	314157588451.9903
2010	400794303659.4435
2011	434531984421.07806
2012	443019328375.9583
2013	477653103874.0345
2014	519379210945.6328
2015	532885577066.23395
2016	551660605640.4491
2017	600765716194.153
2018	618634786897.327
2019	574371209740.144
2020	595713925239.1115
2021	668299767832.3918
2022	576639189845.1028
2023	578432319574.354