Year	current US$
1970	18216033.1203523
1971	45158044.5017991
1972	103912494.895636
1973	125146668.808173
1974	547213818.427538
1975	870046107.798535
1976	1020165912.36896
1977	1052279130.39161
1978	1034265091.37895
1979	1937046512.89451
1980	2581190177.10753
1981	1539859121.30918
1982	613716668.61228
1983	1227021537.06245
1984	1300288462.7027
1985	1348680244.79703
1986	1097869750.33299
1987	751422360.31183
1988	544942017.52181
1989	685857081.295758
1990	1026234850.18004
1991	730415039.480597
1992	455623950.985074
1993	845752432.52069
1994	803665370.218438
1995	1372023928.29523
1996	1566628578.73327
1997	1404796159.85704
1998	187408167.864739
1999	217902159.154734
2000	1096598042.30261
2001	2293245879.14731
2002	1823123744.86097
2003	1934312386.5308
2004	2178129569.85797
2005	1730136533.04543
2006	3516718757.51182
2007	3728719992.86766
2008	7614328926.46756
2009	4649077893.16973
2010	5020133387.61087
2011	7023659581.87323
2012	7641344016.23284
2013	8120538238.53227
2014	5055873344.02361
2015	2586423432.16459
2016	1496386172.10162
2017	1774983896.48841
2018	2920566735.96478
2019	1793506621.37951
2020	637739072.160875
2021	2992655114.53498