Year	constant 2015 US$
1980	99523868.93408915
1981	101884939.99553718
1982	82440634.23312211
1983	69973161.54303716
1984	83150303.79277556
1985	71024474.4576403
1986	78223306.60120077
1987	114711321.28783734
1988	152187722.88254043
1989	178508495.34308326
1990	185512918.48117217
1991	228796863.7806264
1992	240418206.7429022
1993	274295113.17182434
1994	209706055.03278086
1995	229731171.30588293
1996	221077531.30345786
1997	219819090.2030529
1998	216042917.71007267
1999	295771809.8603264
2000	387180432.4657246
2001	362991816.53523636
2002	343530911.39924634
2003	295424326.68417734
2004	279523354.1199356
2005	301663052.80693644
2006	307167687.0503382
2007	335712291.6551655
2008	411684415.20337975
2009	306230771.330375
2010	249788853.00816575
2011	252378672.54572082
2012	243540775.249778
2013	287740458.04469657
2014	341491830.51818544
2015	358137588.6025855
2016	407118817.1054374
2017	349721790.87727225
2018	370379436.5841097
2019	391304461.21120816
2020	350212628.59067494
2021	441164111.2141974
2022	497772797.46722126
2023	545116233.889486