Year	current US$
1976	26998673.519989464
1977	25970175.77164457
1978	28090748.219301146
1979	59627486.1235028
1980	68411660.77018751
1981	81904913.83191407
1982	85713620.13246156
1983	83075051.46548827
1984	69322959.46785794
1985	65670961.28117373
1986	67423493.36192638
1987	89241331.12309839
1988	106367052.62700361
1989	119869443.22749439
1990	198987292.38696623
1991	206682953.61132306
1992	235798551.31884652
1993	257197030.29972017
1994	236822085.52553505
1995	260184212.1842122
1996	213681422.16141173
1997	289994811.33595765
1998	316573915.35698676
1999	307912119.79410386
2000	229592897.35740575
2001	254176188.57875884
2002	191890048.83729714
2003	246758884.0518768
2004	321818436.3636364
2005	383441818.1818181
2006	458359198.30309373
2007	396190736.9878795
2008	556526674.8459356
2009	455689878.13318795
2010	496872923.44385123
2011	539977305.6074809
2012	555442073.9416015
2013	561377585.9686793
2014	888560647.7993742
2015	832741366.6518326
2016	982932787.5113642
2017	1063727518.2406126
2018	1190890357.6901839
2019	1203914446.0477793
2020	1005002702.2932283
2021	1203573216.9744399
2022	1533954323.592541
2023	1580560262.3634527