Year	constant 2015 US$
1968	37824240422.85994
1969	38077320906.1426
1970	39377425414.861664
1971	40766648928.865486
1972	43411746391.477
1973	42619180759.4552
1974	44923709524.32891
1975	45333551311.17866
1976	50143256844.31196
1977	51064810897.33458
1978	51812560531.7991
1979	52705580982.19793
1980	55129571397.71935
1981	55040254995.27004
1982	58864847343.635056
1983	59990886351.282684
1984	64256310334.90822
1985	70349504046.04419
1986	74639265040.63818
1987	75807556143.17885
1988	79879718518.23898
1989	83930979838.68439
1990	89052867944.53194
1991	92213253256.70273
1992	96528278483.27924
1993	96637900736.81596
1994	102593138845.4732
1995	100688507647.33585
1996	106437093958.81392
1997	105277837960.13425
1998	115024102495.39456
1999	113141910594.89749
2000	112266315420.07294
2001	116204446331.09602
2002	123365267287.39674
2003	124804737454.36057
2004	128616698848.34126
2005	135513601599.04459
2006	143495479594.4277
2007	138591450652.1799
2008	131766630872.1348
2009	142707982874.0278
2010	147176636793.2935
2011	155816370567.97018
2012	160065886931.81476
2013	169591974305.9152
2014	171063575943.5853
2015	171253158687.7328
2016	174248825552.18002
2017	178967406988.04828
2018	183599350919.97684
2019	194174797163.97427
2020	198206352035.10663
2021	198797583461.53174
2022	197621271879.16675
2023	205042840580.66803