Year	current US$
1970	695690001.860261
1971	692389996.0722779
1972	803510004.0771065
1973	689600001.1190767
1974	478229997.6758662
1975	899280004.0058793
1976	1005979998.620227
1977	1088590002.6801975
1978	1289969997.9908764
1979	1918489984.1416633
1980	1817440014.1760707
1981	1803349993.301556
1982	1662299996.960908
1983	2073129997.2347918
1984	1742029995.1396883
1985	2558680002.2497773
1986	2676680000.372231
1987	2105550004.8138201
1988	1984000009.6578152
1989	1838449998.0024996
1990	3926469982.8792377
1991	7114679986.881092
1992	5091569971.527904
1993	3778460007.9208612
1994	4255949996.1007395
1995	5416830117.4175005
1996	4664279990.594835
1997	2993490003.8111963
1998	3365619965.55329
1999	3594939994.9796505
2000	3569259972.5518374
2001	2938459973.2458606
2002	3106800005.422906
2003	3577309981.88071
2004	4292480013.0464196
2005	1320960005.098953
2006	1864399996.6047707
2007	1732250025.1121821
2008	2342660041.313619
2009	2732480028.0202184
2010	2340419986.47526
2011	5275279907.83379
2012	4282910086.551681
2013	4161189949.061721
2014	5601930059.839046
2015	3830080019.03258
2016	5606429897.010325
2017	4720379955.163227
2018	3478530001.2715163
2019	1998370015.121995
2020	3305779993.2714567
2021	3501099995.0505795
2022	3122639994.9882193