Year	current US$
1970	23259775437.7856
1971	26017896609.7806
1972	32504613060.2397
1973	41924178087.4606
1974	49056403182.8442
1975	57547594976.1851
1976	62734322170.5173
1977	72341337646.0919
1978	88314527953.2502
1979	100838359571.374
1980	107302022367.566
1981	87857090004.2554
1982	76873648815.8696
1983	72759859873.9574
1984	70161997953.996
1985	72969987156.3493
1986	102020699555.472
1987	127718535418.68
1988	139514860158.712
1989	140805141658.671
1990	176296742884.52
1991	180957688877.52
1992	201394277105.759
1993	194228328405.446
1994	213667220661.627
1995	249400123377.282
1996	240857780104.014
1997	218174585848.152
1998	222732885549.28
1999	221449265529.601
2000	203477946259.606
2001	201000311027.254
2002	218857296974.592
2003	268484991071.579
2004	310258237529.435
2005	322840768603.06
2006	340993664323.911
2007	392858577688.214
2008	432780990178.714
2009	398024041152.696
2010	395800022866.114
2011	422401069029.062
2012	410354943661.441
2013	432605996306.252
2014	443089887782.903
2015	381064891635.198
2016	391256897954.297
2017	413386790372.004
2018	446188765517.236
2019	440488894845.5
2020	424635416711.221
2021	483642703341.618