Year	current US$
1974	49999.9988824129
1975	179999.99970197692
1976	419999.9962002043
1977	790000.0140070909
1978	2370000.0252574706
1979	3839999.9309331165
1980	5859999.878332017
1981	6520000.131800763
1982	7849999.893456696
1983	8440000.014379626
1984	8109999.932348726
1985	10650000.156834718
1986	13289999.924600128
1987	15339999.645948391
1988	13970000.02861024
1989	12080000.091344118
1990	14480000.02652407
1991	14250000.242143868
1992	18379999.889060866
1993	25289999.9767542
1994	35489999.34829772
1995	56909999.81015921
1996	70249999.4523823
1997	84200000.68470842
1998	86159999.13215645
1999	85080000.69111581
2000	99569999.97794637
2001	120440000.07957219
2002	184789999.36394387
2003	230880005.39317718
2004	277419997.4630028
2005	286729998.987168
2006	351910004.6064704
2007	427519997.8500605
2008	507230000.96529734
2009	388489998.6665697
2010	347410000.13798475
2011	356820001.1178852
2012	301449998.0751424
2013	298840003.0601769
2014	279600002.1509827
2015	236269999.5338917
2016	215689999.92683527
2017	219739997.41300935
2018	223439999.73312008
2019	219310000.50529838