Year	current US$
1970	1334603.52709374
1971	1329195.60757886
1972	1377057.66917083
1973	1709798.8857104
1974	2011827.00457528
1975	2201667.30712427
1976	2220622.42246137
1977	2128101.62494511
1980	1176741.53625412
1981	864386.450609621
1982	1060148.36510422
1983	1096212.28484876
1984	1295576.33373223
1985	1478190.85314654
1986	1946999.85921615
1987	2345057.31288218
1988	2549487.95854326
1989	2349548.35670896
1990	3052784.45183025
1991	3071316.02545314
1992	3778335.44388249
1993	3932624.72456126
1994	4470540.0397345
1995	5501860.16230426
1996	8578033.0800165
1997	16085593.3957052
1998	20049339.1363392
1999	35668895.740085
2000	59767889.9510764
2001	77108343.0612446
2002	128556736.469379
2003	166903078.899132
2004	268553069.689137
2005	412890167.856676
2006	567006230.482855
2007	796386655.52247
2008	1193810560.97453
2009	1858682876.49089
2010	2445392877.19447
2011	2831093113.22977
2012	2914523952.0075
2013	2913085638.67453
2014	2966836557.50639
2015	2378184707.12675
2016	2307516387.75106
2017	2335676683.27297
2018	2432553595.16537
2019	2290467395.84816
2020	2383453693.2938
2021	2430291560.62219