Year	constant 2015 US$
1965	22807180.988807812
1966	20653487.000848446
1967	22531082.416039236
1968	20432587.29013192
1969	19493789.582536526
1970	23359419.840419307
1971	29489204.36947678
1972	37496563.458903335
1973	44123346.271446005
1974	69746920.38214768
1975	94872161.59535497
1976	111380541.5137467
1977	111550371.33783184
1978	125171477.54026775
1979	118887419.80894315
1980	103635872.28539194
1981	125680987.84860615
1982	139845595.3542669
1983	136109130.84572056
1984	124560056.83582924
1985	134682468.6267951
1986	161686910.96136293
1987	203942900.819481
1988	268244006.24081326
1989	299732193.4714939
1990	309514924.77820647
1991	335228586.49183357
1992	345554795.93754035
1993	315933821.83103424
1994	326772250.00123006
1995	383576828.5031844
1996	462861328.9667405
1997	553037602.2955521
1998	578722630.5117167
1999	585041197.10405
2000	578743483.6128508
2001	584936931.5983797
2002	592861206.215214
2003	533859405.31586146
2004	532852060.09968567
2005	542681007.7269291
2006	651268655.2578894
2007	818621419.0666127
2008	797619479.8850656
2009	837577859.4749724
2010	870320681.3289304
2011	969110362.708087
2012	1005026030.06882
2013	1070692272.4053764
2014	1159941881.2432487
2015	979900063.1059833
2016	1028468137.9708483
2017	1006241656.2130201
2018	994521780.5391687
2019	1039482826.7860081
2020	884556298.9776961
2021	955978680.1470786
2022	1034383233.6068763
2023	1053900283.8614062