Year	current US$
1970	28705975836.43123
1971	30979622347.066166
1972	35292420318.7251
1973	45314789106.6091
1974	54166838344.74546
1975	59296494661.92171
1976	55944331239.82321
1977	63835562870.30942
1978	76077467488.0219
1979	95338387322.30249
1980	122492109427.99005
1981	111048751490.37643
1982	103796529706.51396
1983	101641885517.59306
1984	99741375358.16618
1985	101109158300.37521
1986	138202334069.35965
1987	173901050194.20377
1988	195961734602.79678
1989	204536439458.08636
1990	263320804783.45184
1991	272790780396.44138
1992	281592098978.7903
1993	203438118616.95584
1994	206758472622.4784
1995	227562581718.76855
1996	251948927092.48337
1997	238014665757.16232
1998	247496933199.5093
1999	248997031784.4407
2000	237715333971.45148
2001	242026952424.76404
2002	272761331543.37305
2003	329333502231.1366
2004	378725962726.6419
2005	395459348106.459
2006	420720529153.4112
2007	479370331134.3937
2008	512510775457.73425
2009	442417033958.945
2010	427737444776.6675
2011	452432226894.9425
2012	382102318001.25006
2013	368509193610.6677
2014	361534882191.1752
2015	311043173734.8826
2016	322311922557.7829
2017	342937201773.0594
2018	373329126316.3135
2019	361817967781.9602
2020	340953305454.94257
2021	439821854339.52783
2022	447697942039.30133
2023	477315763536.28296