Year	constant 2015 US$
1960	779780320.76383
1961	747700105.6395397
1962	866221399.0067605
1963	808832676.6175342
1964	658587413.5610836
1965	712875498.2240442
1966	779006138.6123037
1967	838366465.516533
1968	899560666.1059328
1969	1018062946.3386198
1970	1047507984.5008147
1971	1058507714.3887017
1972	1043991148.4490402
1973	1027399746.9865954
1974	1071780556.7957875
1975	1013792075.9255815
1976	1174949053.6977916
1977	1233342455.4235861
1978	1353089733.5401561
1979	1530170320.5388474
1980	1645483753.8251886
1981	1766059585.7176614
1982	1699549650.8465307
1983	1904902916.4473052
1984	1659830320.0785666
1985	1658917211.7438364
1986	1849633829.5896866
1987	1789979022.156831
1988	1960286112.3799496
1989	1989655113.200231
1990	1988301502.662833
1991	2231818760.768778
1992	2314240787.412802
1993	2184174721.5751987
1994	1570762991.4968321
1995	1627733788.5860097
1996	1786448176.1687815
1997	2080534216.474179
1998	2195801704.477682
1999	2611629206.277531
2000	2895604642.6041956
2001	3040446961.0449777
2002	3455660527.8409657
2003	3372437471.497399
2004	3613404593.347236
2005	3932191954.785154
2006	4329242940.496479
2007	4433068439.156612
2008	4746596212.037955
2009	5226418151.169325
2010	5552716897.543236
2011	6010215165.045895
2012	6483375124.73395
2013	6712175322.451847
2014	7280567088.865306
2015	8073634080.867991
2016	8475460170.184788
2017	8508015317.066225
2018	9262729533.788029
2019	9684370933.058676
2020	9817938078.588572
2021	10546148851.19863
2022	11789942530.551926
2023	12574278829.733965