Year	constant 2015 US$
1980	132086051.07654664
1981	139706650.7889858
1982	142782538.51488215
1983	149927929.5901972
1984	151444273.1888827
1985	170988427.52998072
1986	167003445.86168998
1987	174412950.14080387
1988	179044071.24742904
1989	176843300.77101424
1990	173733397.99698955
1991	171957427.66015247
1992	231704586.21442077
1993	257269046.82917976
1994	300152801.1451993
1995	352638311.5536164
1996	587424889.5882748
1997	1468403404.7697177
1998	1817508712.769235
1999	2283954429.4566116
2000	2699948863.5552497
2001	4411173089.8168955
2002	5269712387.325347
2003	6005113941.930015
2004	8286980786.094093
2005	9674942387.180212
2006	10420388726.597273
2007	12012844402.649117
2008	14151023687.8999
2009	14341122354.436298
2010	13061295371.13882
2011	13913404306.227415
2012	15070007775.40518
2013	14447134439.883953
2014	14507099626.490307
2015	13185496881.017399
2016	12023008461.848507
2017	11341603434.73238
2018	10634279338.581696
2019	10051326714.932543
2020	9569759527.14748
2021	9652085293.25754
2022	10010757805.253231
2023	9440987169.357283