Year	current US$
1970	3726666666.666667
1971	3295000000
1972	4187500000
1973	5440000000
1974	8117500000
1975	7633333333.333334
1976	7737500000
1977	8778000000
1978	8594705882.352942
1979	11093200000
1980	11869019607.843136
1981	12971052631.578947
1982	14521275720.16461
1983	16660729537.366549
1984	14600439972.71487
1985	14504952073.967255
1986	19375735313.886276
1987	23665228270.412643
1988	28743518043.655014
1989	28847813087.038197
1990	33419488641.999805
1991	37202973980.95739
1992	41292497661.74617
1993	42559569979.859375
1994	48820845538.17542
1995	55558852654.999504
1996	59589017764.82752
1997	60993344639.64748
1998	61784170679.718956
1999	62405517791.14428
2000	69856339244.10762
2001	70919917255.15372
2002	66832880239.773735
2003	69914581146.65906
2004	75107347835.7876
2005	78798334558.90544
2006	85379338165.9859
2007	100835158345.70726
2008	122810880434.78261
2009	115989266841.2888
2010	131078073001.29047
2011	147198830149.7122
2012	142802849988.62314
2013	160493676536.09253
2014	168836272699.95877
2015	160487784914.88373
2016	170998726490.01434
2017	189208752828.98035
2018	197949645676.33017
2019	208829581769.86298
2020	199470793835.49966
2021	240066941895.14505
2022	258337652556.59644
2023	245632154266.73862