Year	current US$
1970	44739999.398589104
1971	55969999.391585566
1972	88870000.59336428
1973	127360000.41291119
1974	179670001.7265976
1975	332280004.43056226
1976	334400002.4795531
1977	411669998.7184261
1978	388439998.60435724
1979	535190000.87678444
1980	565550001.4424322
1981	467109996.70438457
1982	468149994.61732787
1983	414429999.0367144
1984	398080001.8776209
1985	398779995.8307297
1986	605250003.0174853
1987	557819996.0906059
1988	741589996.2540711
1989	873360003.003851
1990	917670006.6272177
1991	1059340004.293248
1992	1206809992.2463293
1993	885759993.7114866
1994	924010003.8331002
1995	840040004.465729
1996	980409999.7468292
1997	826269997.1348045
1998	643770001.9348414
1999	690520000.6682426
2000	793370001.7035004
2001	730519999.0700932
2002	708399997.3535539
2003	1062780000.4780293
2004	1178709996.0353227
2005	1229560006.5682085
2006	1626809993.1962783
2007	1460789998.3264496
2008	1528769992.7575886
2009	1398230010.073632
2010	1375770007.2359293
2011	1842689995.246009
2012	1542349985.07984
2013	1707260005.3586059
2014	1600139991.9092655
2015	1292409997.7072332
2016	1332740000.7974353
2017	1565309991.160407
2018	1764850001.581013
2019	1653340002.6522574
2020	1705950001.658872
2021	2069249992.2998242
2022	1776919997.0271442