Year	current US$
1975	6821183125.909163
1976	7339896907.216495
1977	7487088682.307806
1978	8351706859.205776
1979	10678787971.302092
1980	12983742429.072363
1981	12263709010.746761
1982	11962501541.87739
1983	11357813834.329634
1984	11791650178.076773
1985	12130660015.349194
1986	15263898662.91344
1987	19365616123.359936
1988	22582800284.29282
1989	24343910211.999447
1990	27594464313.481575
1991	21924716953.389206
1992	20374303159.012478
1993	17694389507.650673
1994	21683551508.252705
1995	29833877995.6427
1996	28266891017.344036
1997	27487114878.020847
1998	30708722741.43302
1999	30876609471.42864
2000	30433957102.745163
2001	30572313923.228382
2002	32106955849.019665
2003	37673296860.78423
2004	42542703130.115944
2005	43467270026.45912
2006	47348631635.29405
2007	56736420345.49038
2008	59397930360.937485
2009	42254933470.703094
2010	42324830300.000084
2011	44815391322.95728
2012	37350091480.07813
2013	39360106210.19619
2014	39731472956.47045
2015	34440389637.89061
2016	35070011324.1246
2017	38861032470.5883
2018	40237482058.039185
2019	38699114329.411705
2020	38779842291.05069
2021	43452696251.93729
2022	43992159906.61496
2023	44965637141.17726