Year	current US$
1960	30460000
1961	31160000
1962	22300000
1963	33600000
1964	36550000
1965	46110000
1966	40700000
1967	45100000
1968	45400000
1969	54100000
1970	60760000
1971	74669176.4961394
1972	116244623.004229
1973	191305953.344238
1974	181274685.372784
1975	283751675.240514
1976	491033330.654034
1977	668870895.521319
1978	741505469.178334
1979	696286947.929532
1980	444689518.723426
1981	149714640.235951
1982	112233093.223647
1983	210025838.882716
1984	274360419.139533
1985	300900000
1986	362100000
1987	287802393.281221
1988	201161483.495041
1989	306022790.233133
1990	282000000
1991	807300000
1992	765220058.57522
1993	867795652.628382
1994	863116206.060411
1995	701958001.748106
1996	869698361.881536
1997	1111131254.8573
1998	1335080655.15372
1999	1189173173.56377
2000	1746396636.93431
2001	2292160596.49423
2002	2299138097.37449
2003	2833213472.99472
2004	3426280348.24634
2005	3663840974.18746
2006	3914946990.59448
2007	4129941880.36889
2008	4461891555.47204
2009	4963623699.87506
2010	5636813559.3899
2011	5834915613.17611
2012	6325027870.58643
2013	7002287143.62926
2014	7063616498.16639
2015	7511020506.07283
2016	8898696521.3824
2017	11477799830.8297
2018	12299108001.7733
2019	14446549964.6684
2020	18044494441.5352
2021	20531547274.6135
2022	20013321408.4224
2023	20854062009.3863