Year	constant 2015 US$
1987	536276902.80521965
1988	590977065.7806269
1989	618276254.0832335
1990	626748032.1356331
1991	578240067.2706193
1992	563000373.1285005
1993	514401275.19943273
1994	470134268.50697845
1995	460682845.87271464
1996	530667977.53575635
1997	595711820.1428511
1998	612703317.6599514
1999	663020340.4617333
2000	680790686.9473904
2001	730325894.8621354
2002	753025786.101151
2003	777088213.8622441
2004	809012335.0130631
2005	775337016.5263329
2006	788491584.2744364
2007	801206228.8736132
2008	808117088.282978
2009	862460256.6582172
2010	840281275.895295
2011	855797281.0021961
2012	866471488.4671811
2013	889440989.0419672
2014	884551488.7792952
2015	939002801.459735
2016	965916287.9931153
2017	987505173.4106302
2018	1013227064.699783
2019	1038330105.9261274
2020	1047266121.4087843
2021	999710751.3124121
2022	1072753545.9762318
2023	1079326769.6945932