Year	current US$
1975	12653072.36
1976	14296213.15
1977	66100570.68000001
1978	72999969.48
1979	92032424.93
1980	109972061.2
1981	133439346.30000001
1982	139730178.8
1983	126913864.1
1984	108805236.8
1985	143537109.4
1986	181133026.1
1987	238485809.3
1988	226984314
1989	250673156.7
1990	216797373.049366
1991	309144752.152847
1992	446375352.485404
1993	531989185.893735
1994	474738581.022549
1995	603073709.959556
1996	647206936.92177
1997	703252851.987454
1998	745710304.635509
1999	957723859.369872
2000	1059510253.66112
2001	1022440563.25367
2002	922870428.847798
2003	1430077423.31357
2004	1749216384.60009
2005	2174008490.80832
2006	2596882572.17891
2007	3577067724.4382
2008	4750013567.77492
2009	4174095053.5958
2010	4118496971.95049
2011	4427035713.50554
2012	5099595368.73623
2013	5799187010.92116
2014	5941154711.73783
2015	4578256592.99854
2016	4162485626.49775
2017	4025198596.09662
2018	4410935943.39499
2019	4619086160.04778
2020	3870828557.62766
2021	3990222811.31935
2022	4506147603.37788
2023	4546348505.43539