Year	constant 2015 US$
1975	101459241.18837182
1976	85941168.49719651
1977	86499891.03670113
1978	110801323.09792824
1979	138334943.48939684
1980	161518930.47161597
1981	179205810.80821115
1982	164847234.36570114
1983	138539207.4332652
1984	165099560.99141905
1985	152789640.3936636
1986	142498327.8916456
1987	97968724.52007586
1988	197343270.20623067
1989	408330188.1595667
1990	444616115.8017306
1991	395902740.5100263
1992	360836968.85246813
1993	367787002.74496
1994	350764477.3254096
1995	380062632.2664716
1996	378284163.7468156
1997	382879757.02772945
1998	654887092.3983668
1999	498190994.9291662
2000	668894351.61303
2001	652819570.7037847
2002	670594426.8290696
2003	694363753.1045728
2004	860532653.9050933
2005	720254302.0667946
2006	826354752.6878335
2007	1150119852.7056327
2008	3398053719.861521
2009	2566867992.997994
2010	3262645237.374828
2011	4147154030.0200615
2012	3979163497.0081124
2013	3069514964.3709164
2014	3450519043.6511993
2015	3848590027.517052
2016	3472553897.7465315
2017	3955725497.527615
2018	3929045340.125855
2019	4889921901.193004
2020	5270255029.118137
2021	4869276152.31968
2022	4543818430.280008
2023	5432461608.291228