Year	constant 2015 US$
1970	22278823569.481243
1971	23706469310.26093
1972	26111513803.727333
1973	27532168503.78319
1974	30481145034.80116
1975	29749842898.33241
1976	33040000190.782017
1977	33831081772.284748
1978	36784051440.196075
1979	40949555599.165596
1980	42457141743.71481
1981	44530512891.70934
1982	44492698473.37106
1983	45197441090.26403
1984	48958000781.97769
1985	53341897020.28628
1986	51180353992.38667
1987	52936776140.48081
1988	57307733239.45894
1989	63350301321.17183
1990	68780828807.02925
1991	70801125296.38785
1992	71735265250.982
1993	70032871942.60973
1994	74016403782.87497
1995	79349577060.1445
1996	83030197457.60153
1997	92186619014.41794
1998	99424637307.69919
1999	105821578259.11324
2000	120133506794.02339
2001	127066409042.38278
2002	132512752634.49606
2003	133217049227.207
2004	144755073489.1367
2005	154403153493.17575
2006	166101003086.99997
2007	178677853173.29294
2008	182556355194.7929
2009	156326460803.68744
2010	176853802885.9765
2011	187350715726.98822
2012	190044246886.1718
2013	191261770856.69916
2014	196784648648.00772
2015	202784894360.50772
2016	208844321490.59366
2017	219073531061.35535
2018	230461893129.4686
2019	239817738533.24594
2020	214469829224.28503
2021	234044998438.9686
2022	260228348764.31232
2023	259835226156.90607