Year	current US$
1970	80039999.51481819
1971	90949999.94896351
1972	96390000.0527501
1973	102990000.13433398
1974	106130000.68068506
1975	160960000.09030104
1976	153340000.5996227
1977	147089999.2138147
1978	181669999.4876981
1979	228510000.65170226
1980	306129998.29649925
1981	405440004.16994107
1982	355990002.22980964
1983	297840001.3819336
1984	289819997.8880585
1985	327630001.61945814
1986	369590001.76191324
1987	377799999.5648861
1988	437299999.3860724
1989	474559999.54044825
1990	446820000.0002982
1991	492380002.3496154
1992	428550003.86759657
1993	364830001.4287233
1994	300769998.1089682
1995	278720000.3489852
1996	330679997.3603337
1997	411959999.55572164
1998	358500000.5848705
1999	305770000.9942055
2000	229529998.01188713
2001	198660000.8476525
2002	201719999.56667438
2003	215139999.74541372
2004	268810000.2557039
2005	287680001.59040105
2006	320570000.577718
2007	319469999.7305869
2008	383150000.2443789
2009	413239998.99998313
2010	403560000.74744225
2011	325709999.5594471
2012	323037132.2586705
2013	310485374.8697788
2014	316663919.2793518
2015	286624543.1930293
2016	266866362.20291263
2017	247875360.66174293
2018	224490407.99029174
2019	287062477.9164791
2020	324209150.65705776
2021	313230591.9416249
2022	336021096.0321128