Year	current US$
1970	2275592747.5592747
1971	2402522968.1978803
1972	3229918458.117124
1973	4718004905.968928
1974	5192651933.701657
1975	3763270588.235294
1976	5038070291.777188
1977	6457742273.441593
1978	7426628649.635036
1979	8145692622.95082
1980	11192234681.61794
1981	11463065146.579805
1982	10800078203.83451
1983	7986757148.027507
1984	5814856203.779787
1985	5803674549.947053
1986	8978241522.584105
1987	13191763199.089228
1988	17169445682.451254
1989	17144174942.704355
1990	21820372662.072845
1991	22967550992.091022
1992	26839927234.927235
1993	21040340356.564014
1994	22879309178.74396
1995	28577703330.237495
1996	29931983363.659996
1997	31037868496.28359
1998	35097586821.01514
1999	37001875043.28696
2000	34130587948.051838
2001	34240666480.497284
2002	34917887447.70124
2003	38191543650.25286
2004	45119010169.24452
2005	46075771517.80854
2006	47858821616.456406
2007	55554336440.41351
2008	62112250759.66874
2009	50994896766.13747
2010	50303755487.08343
2011	45586413432.96702
2012	33951416880.1711
2013	33132071976.87539
2014	35213205919.49831
2015	31614571256.757797
2016	32682471120.367783
2017	38132712330.26241
2018	44320211855.88075
2019	44379729883.50581
2020	43783208360.18533
2021	52710342922.64256
2022	52701294416.47297
2023	56236971617.00491