Year	constant 2015 US$
1976	446443325.9385364
1977	457855335.8100797
1978	548154582.5948459
1979	729749908.3519518
1980	879068495.3458688
1981	951527883.325423
1982	950152942.3770444
1983	927810151.965892
1984	1107239945.7293017
1985	1144844580.6674564
1986	1094659236.0516372
1987	1122020560.9243717
1988	1004153748.124614
1989	1219538247.6881251
1990	1253052433.304855
1991	1259617842.335639
1992	1696127136.9859467
1993	1715891998.3995786
1994	2013601050.6744463
1995	2038934345.331114
1996	1879028632.8256557
1997	2081729346.6094868
1998	2274771087.940142
1999	2442410680.7476964
2000	2607575476.9163246
2001	2827187911.2231107
2002	3373795664.7441583
2003	3469285417.078418
2004	4056316444.830384
2005	4371727840.245842
2006	4863441179.926906
2007	5309300097.450523
2008	6095039863.593161
2009	6216038213.37286
2010	6340588521.505628
2011	6587385842.173784
2012	6743977135.125097
2013	6877015618.370767
2014	6986468484.240284
2015	7085201830.985916
2016	7180834078.438439
2017	7271457312.712016
2018	7396798525.073325
2019	7565384189.718439
2020	7489583967.880548
2021	7663386052.136624
2022	7918761240.991136
2023	8197261211.9695