Year	current US$
1970	236599899.3
1971	283822326.7
1972	279514373.8
1973	423839386
1974	566159301.8
1975	666929443.4
1976	576150024.4
1977	629049987.8
1978	696900024.4
1979	805829650.9
1980	1016783813
1981	1049835814.9999999
1982	952328369.1
1983	1079986450
1984	934106750.5
1985	721691406.3
1986	843415832.5
1987	1069280150.9999999
1988	1070528687
1989	1093382080
1990	1115615401.06931
1991	802710419.597008
1992	738430488.604319
1993	631943781.991882
1994	571592532.23325
1995	566617152.303803
1996	518459412.810091
1997	581840215.56912
1998	616228476.389861
1999	641272393.336099
2000	614277481.871135
2001	520760001.242934
2002	505532298.703999
2003	705751528.172236
2004	934598613.506281
2005	1041844333.33376
2006	1055126655.0932
2007	1172716921.71143
2008	1118933008.99575
2009	1143855053.34513
2010	1352799185.48405
2011	1422697864.68309
2012	1319944369.44932
2013	1181980418.6965
2014	1093585875.83944
2015	980097838.522207
2016	896798664.324972
2017	1033489764.49071
2018	1097843691.03595
2019	1052038112.59502
2020	920781830.149879
2021	1066450455.4384
2022	1011887843.09604