Year	current US$
1970	230205453.882369
1971	256822956.518726
1972	295140387.338788
1973	421855670.72275
1974	457068816.635866
1975	492170995.294999
1976	463603121.292248
1977	492360980.207757
1978	595348160.203391
1979	729073411.093261
1980	797014190.624923
1981	668726752.675483
1982	581340163.789468
1983	577759386.735124
1984	572809329.22914
1985	591214001.188233
1986	818876627.609371
1987	1052509922.66948
1988	1137335302.74501
1989	1185787260.28894
1990	1526578917.45659
1991	1602189342.86525
1992	1890080284.48791
1993	1841693056.07176
1994	2016578662.59252
1995	2389674488.78822
1996	2406673000.11016
1997	2168112409.1269
1998	2274461300.27669
1999	2352645794.16795
2000	2293452235.68449
2001	2357013376.33386
2002	2355599392.71064
2003	2832272265.05183
2004	3432125184.97307
2005	3584521245.93205
2006	3986741159.87227
2007	4700322271.02677
2008	5679530188.67654
2009	6160806157.25864
2010	6140454457.65649
2011	7049974962.11254
2012	6852291901.91328
2013	7422984533.75851
2014	7775050839.12355
2015	6907605355.89599
2016	7194427472.83499
2017	7635628038.50528
2018	8490944831.11337
2019	8476325148.64528
2020	9151960543.60976
2021	9904030806.27202