Year	constant 2015 US$
1975	248414555.6561409
1976	256402955.8923945
1977	297375907.63161874
1978	283975952.3506388
1979	313868160.28603315
1980	317448084.63921124
1981	358742144.43491274
1982	348418629.4713532
1983	317448084.6392112
1984	330352478.3070752
1985	332933357.0699163
1986	325190720.8399296
1987	343256872.0042075
1988	340675993.2706348
1989	332933357.0699163
1990	335514235.80348915
1991	377186363.20133036
1992	385734518.464925
1993	357953087.0289671
1994	341925332.4950895
1995	319486476.14766085
1996	323760553.77945817
1997	315212398.5158636
1998	294910624.88676834
1999	307732799.24558055
2000	325897577.9612119
2001	363295662.11749643
2002	349404931.7653726
2003	362227164.6607645
2004	365432686.2992502
2005	347267907.5836188
2006	358479038.19716704
2007	377881250.9384146
2008	343234415.2942034
2009	450870541.37848383
2010	463805340.11655223
2011	484593435.649421
2012	534022894.24166894
2013	485979289.1727523
2014	511848915.9171789
2015	533546874.77591467
2016	533801216.21451557
2017	499568146.3835955
2018	457131174.91403174
2019	371122207.6953944
2020	332855674.8433488
2021	307830994.3579518
2022	302861824.11104155