Year	constant 2015 US$
1970	26337339444.859077
1971	28597969138.908436
1972	29977218501.03091
1973	31005214493.72332
1974	31311611910.897263
1975	34287251582.966682
1976	36140456095.217545
1977	39280474122.205124
1978	41866284281.36116
1979	42341930276.28717
1980	40340512031.62254
1981	48160504417.97107
1982	52451683311.70448
1983	55303206675.039665
1984	59895068644.20095
1985	61177053257.19183
1986	59918420956.69539
1987	59205314567.16328
1988	61509379320.45768
1989	63138141961.28005
1990	60256795119.39545
1991	52974574011.61442
1992	43325964323.56873
1993	38915551913.77237
1994	38971786428.19715
1995	39362911939.92764
1996	41805717292.64336
1997	43006641391.01044
1998	43105313956.742256
1999	45146888862.526634
2000	46532419499.64859
2001	48122687464.70715
2002	48911197799.554276
2003	51542616869.5368
2004	53760871383.32311
2005	56754477228.90177
2006	65782595091.70739
2007	68560267002.7751
2008	69724154912.93182
2009	69040336320.34431
2010	72698301858.06157
2011	73561991190.56564
2012	75335015027.76675
2013	78160094868.93552
2014	79803019526.99054
2015	84797000000
2016	87613679280.2941
2017	89060430599.91084
2018	91070147847.7734
2019	91377236626.15329
2020	83357950924.43863
2021	85124055781.1102
2022	86066399970.47241