Year	constant 2015 US$
1989	321265490.3463649
1990	299695073.7927731
1991	285947253.88127846
1992	261148898.65699694
1993	252462862.9599784
1994	259628639.135106
1995	271791504.72737026
1996	302689370.40021473
1997	269270185.3344076
1998	265796749.93284976
1999	300610045.6621004
2000	324450443.1909749
2001	281742976.09454733
2002	262639081.385979
2003	337870534.5151759
2004	370473462.26161695
2005	349632849.85226965
2006	387209105.56003225
2007	338423126.5108783
2008	313714370.13161427
2009	294926242.27773297
2010	321687483.212463
2011	322555842.0628525
2012	359816330.915928
2013	315766854.6870803
2014	335660166.5323664
2015	293900000
2016	307477974.7515445
2017	258928820.84340587
2018	219931614.28955144
2019	226168009.6696213
2020	177066263.76578027
2021	59600993.8221864
2022	49733279.61321515
2023	52101531.023368254