Year	current US$
1974	86886635.074
1975	359711405.29800004
1976	470565966.578
1977	755398849.463
1978	1058675739.6673002
1979	1494367624.0576997
1980	1981932187.5523999
1981	1580227515.124
1982	1422902779.9570997
1983	1376300954.6076996
1984	1204265328.9182
1985	1271336125.6612
1986	1433384998.2067
1987	1366891448.4875
1988	1328909615.1555
1989	1161978275.5017998
1990	1316963907.9266787
1991	1298875500.8204844
1992	1348742841.2230268
1993	1192066325.3716674
1994	963445451.9412795
1995	1025123020.4185947
1996	1058976898.837171
1997	1109955983.332573
1998	1197509588.290029
1999	1484955016.7378235
2000	1482829645.111456
2001	1354684494.084838
2002	1553950594.6202383
2003	1602206415.868071
2004	1718814236.5718288
2005	1972738845.687977
2006	3031035064.5598207
2007	2617112243.3072095
2008	3224556228.5428305
2009	3946624015.307211
2010	4418156522.302062
2011	4833194491.487192
2012	6918442031.6082535
2013	7772857110.871993
2014	7979008098.335712
2015	7352511154.071266
2016	6663691284.30952
2017	6226476345.370693
2018	6823719542.659774
2019	6685262151.762425
2020	6620005828.467279
2021	6119907580.472446
2022	5639584884.113429