Year	constant 2015 US$
1981	6595499596.5581455
1982	6388361986.435495
1983	7286239235.263154
1984	6383497539.276712
1985	5073078388.702111
1986	5911069816.475706
1987	6938493786.030676
1988	6838406079.440003
1989	6902436111.078195
1990	7276910104.460422
1991	7456811427.675197
1992	7340004501.236343
1993	7823485769.029349
1994	7621653854.633259
1995	7908738444.862091
1996	9250217705.950405
1997	9435420675.937727
1998	8525815231.28849
1999	8815502503.250725
2000	9084654138.784637
2001	9958989112.91782
2002	9772203558.542439
2003	8747599265.307938
2004	10229864337.061152
2005	11615288522.229618
2006	12882374961.4536
2007	14099542570.099342
2008	15157215952.61035
2009	16121360446.532915
2010	16948435024.107176
2011	18476333868.18556
2012	19385757261.55045
2013	20761847028.815403
2014	21892688632.000465
2015	23288958300.428123
2016	24267056195.478634
2017	25887452051.45714
2018	26795282222.897823
2019	27822711127.64514
2020	29006250268.719128
2021	30615998151.716625
2022	32489234370.88525
2023	34519909425.65488