Year	current US$
1975	12131793.98
1976	14228888.51
1977	15874328.61
1978	22157634.74
1979	28205875.4
1980	32184844.97
1981	30912874.22
1982	28909978.87
1983	27029436.11
1984	24945264.82
1985	24039373.4
1986	35806491.85
1987	42923229.22
1988	42639167.79
1989	35422275.54
1990	44442031.86
1991	41473640.44
1992	49518871.31
1993	57564102.17
1994	110409729
1995	151057266.2
1996	147003509.5
1997	136378585.8
1998	142567581.2
1999	137560699.5
2000	119317176.8
2001	116004821.8
2002	120092422.5
2003	141603500.4
2004	159198211.7
2005	163238757.499224
2006	166909883.13886
2007	184936824.513276
2008	199721402.156654
2009	316346324.011049
2010	373841959.225322
2011	397123339.074986
2012	367086167.01074
2013	384778636.222717
2014	387214302.313813
2015	336382061.922343
2016	342435061.096104
2017	307645127.912134
2018	332046729.961811
2019	328290412.149646
2020	329147636.244163
2021	440194174.696337
2022	1041929443.64097
2023	445864440.917969