Year	constant 2015 US$
1970	14461128738.704178
1971	15700689352.132597
1972	16458258831.021622
1973	17025601710.609097
1974	17198641085.686825
1975	18821385821.05306
1976	19830938412.038467
1977	21568225495.502377
1978	23009539017.83472
1979	23289685477.97746
1980	22075516342.7854
1981	26374979299.32407
1982	28895901183.23356
1983	30536457795.20561
1984	33076705881.005802
1985	32625278581.390633
1986	32941346926.96242
1987	33581287698.764553
1988	34349997236.26778
1989	34892386108.84544
1990	32595232496.35622
1991	29257784671.01355
1992	24036023269.42543
1993	21314323627.43705
1994	22521626517.05616
1995	22852913060.723045
1996	23748360096.836666
1997	24297531226.597805
1998	24753920019.367332
1999	26019489903.16333
2000	26563489044.54487
2001	27578766036.15236
2002	28166648715.300194
2003	29913056791.47837
2004	30373677211.10394
2005	30488558043.899292
2006	36193104499.677216
2007	36742118902.51776
2008	36093426178.179474
2009	36417067269.20594
2010	39277333570.04519
2011	39827445061.32989
2012	41123576694.6417
2013	43245659199.483536
2014	45228254744.99677
2015	48554000000
2016	50564806391.22014
2017	51412699031.63331
2018	52566209167.20464
2019	52116402905.10006
2020	47588562169.14138
2021	46322208650.74242
2022	47278242866.365395