Year	current US$
1978	681130765.632072
1979	996354092.575033
1980	280820273.078761
1981	1327245578.19049
1982	923267457.690048
1983	371238982.619758
1984	318470522.841741
1985	309946002.961361
1986	631738469.86191
1987	884225872.72331
1988	1177166952.62284
1989	1070259834.04188
1990	1194212599.08759
1991	1688155886.40698
1992	1843127295.44073
1993	2023414812.34642
1994	2352447198.11231
1995	2594921067.00401
1996	2778815468.21831
1997	3073089555.74967
1998	3316092543.98429
1999	2491414782.24892
2000	2030818898.43164
2001	1890790428.99923
2002	1673553047.53929
2003	1436681135.68355
2004	1927908855.80073
2005	2658376878.16322
2006	2815292473.41655
2007	3505926968.53809
2008	4223008786.61008
2009	4653132351.8797
2010	5634368697.28265
2011	6570934189.732
2012	3931898811.73296
2013	5180079557.61446
2014	4243584050.78047
2015	4913519477.1606
2016	6926054559.57643
2017	6221018145.98383
2018	4798905139.30201
2019	5595713307.61088
2020	5021490104.76999
2021	5360239050.0872