Year	current US$
1970	44962029.7798674
1971	42674112.3416668
1972	50984609.4312536
1973	79179073.4056398
1974	96337047.0901147
1975	118530830.672503
1976	124381248.939588
1977	184251795.340491
1978	206166213.792982
1979	231325327.356679
1980	264907950.327084
1981	220720454.086851
1982	265340351.26161
1983	206739313.455038
1984	190434461.610381
1985	174518383.071664
1986	244356360.290185
1987	249801224.338822
1988	256492196.290462
1989	280447257.980267
1990	397016166.702532
1991	368876431.661355
1992	369266316.972807
1993	357793529.088677
1994	417372102.590499
1995	565940441.168797
1996	548628964.7887
1997	462724159.880249
1998	389585716.607012
1999	277715908.255147
2000	281373744.969913
2001	226602652.653843
2002	273934688.670102
2003	440409026.228618
2004	369435031.990245
2005	407785018.599536
2006	484184535.225632
2007	693533730.955741
2008	805515418.827299
2009	718155331.333111
2010	729883008.575072
2011	841945169.140832
2012	890526170.906768
2013	1037321285.71987
2014	1161294394.32946
2015	1154661679.84495
2016	1245022369.96294
2017	1353466657.71094
2018	1184634715.98177
2019	1048281688.01673
2020	1100934132.92768
2021	1169556549.2905