Year	constant 2015 US$
1970	39764675716.90624
1971	38950738169.85663
1972	38919424387.54452
1973	43525763536.755844
1974	48004040489.10545
1975	41598159082.81873
1976	45045887176.969124
1977	45386151480.753105
1978	46423650327.699196
1979	46572825445.35662
1980	53643761082.92576
1981	43823900745.59569
1982	40525122537.98592
1983	36023311707.713264
1984	40592775086.491776
1985	39311795854.72381
1986	41500195751.653885
1987	45334309490.93865
1988	53887897189.86599
1989	59741281119.08552
1990	64323979877.1363
1991	61991450927.17537
1992	63125359787.23943
1993	61259042606.35467
1994	63565099688.25819
1995	66180002997.42185
1996	66454940291.71873
1997	71558255783.43747
1998	72657339252.8906
1999	75426572476.60153
2000	80849538632.10934
2001	78663465383.7109
2002	74955251400.66402
2003	75182368689.37497
2004	83165868693.86714
2005	89953313802.26558
2006	93274973494.2187
2007	101414692913.71088
2008	103479385451.87494
2009	94441737249.99994
2010	96538938515.85931
2011	104019052521.87494
2012	102090164361.52338
2013	98225065255.74213
2014	103540297709.57025
2015	109240420185.15619
2016	114869090030.58588
2017	116503291567.18742
2018	121951665567.89055
2019	124313818512.03117
2020	114705769733.08586
2021	122529167027.46086
2022	123894089785.50774
2023	127914076890.82024