Year	current US$
1980	50268480.6509681
1981	43395441.1150538
1982	47535431.3966519
1983	66677059.626642
1984	48576065.2448819
1985	43520456.9420035
1986	60259785.2066591
1987	67531269.4179234
1988	56281272.4899409
1989	48997753.0422898
1990	72373876.7409768
1991	115039950.793174
1992	157486270.573515
1993	252685722.758019
1994	372621134.593571
1995	456739363.843931
1996	460505560.802494
1997	571737996.47036
1998	575080928.099238
1999	499556717.197989
2000	417891096.032125
2001	386488996.575835
2002	406370215.02663
2003	460333705.204936
2004	501504280.465691
2005	519110911.299774
2006	658401554.709079
2007	1002760338.36274
2008	971530251.526022
2009	1502248532.21839
2010	1485976652.76529
2011	903895914.949344
2012	999498707.573327
2013	1060172209.08261
2014	1081271062.14794
2015	997431660.022088
2016	925195318.767947
2017	657668309.282079
2018	728527649.979486
2019	774095190.47731