Year	current US$
1970	61939999.25255775
1971	70609999.24875793
1972	72480000.73246655
1973	57410000.16778707
1974	105150000.27976933
1975	110459999.01555482
1976	162389997.02408892
1977	146939998.0213494
1978	222129999.0415573
1979	247750000.39488074
1980	233129996.37424943
1981	281780002.9627979
1982	311170002.99692154
1983	223899999.4508922
1984	247740000.8700788
1985	258779999.62307513
1986	279309999.7173995
1987	287149999.1379678
1988	305549999.20353293
1989	407869999.0157038
1990	469040001.6568601
1991	333050001.6771257
1992	310899998.83249396
1993	288689997.0229716
1994	328990000.04492706
1995	371669998.852536
1996	360290001.5786289
1997	456140003.18013155
1998	254810000.18492338
1999	196009999.3497132
2000	149870002.30886048
2001	178580000.46759844
2002	132590000.3276765
2003	106540000.54113567
2004	224400000.6187706
2005	200660000.6669761
2006	210219997.61462203
2007	377460001.99206126
2008	417499998.4540045
2009	485010002.1567192
2010	445740004.1911752
2011	300269996.63747835
2012	197739999.95551997
2013	206430000.0797956
2014	282769997.5781144
2015	124410000.01691283
2016	177419998.6867606
2017	144620000.25250024
2018	200969999.80323008
2019	204169999.54544008
2020	131940000.0777096
2021	143239999.461919
2022	192009999.10756952