Year	current US$
1970	7070000.0412762165
1971	6840000.187978144
1972	5660000.110045068
1973	4130000.0119954357
1974	5100000.057369468
1975	7750000.085681677
1976	7030000.029131769
1977	7029999.958351253
1978	8819999.955594534
1979	14219999.862834811
1980	17449999.96945262
1981	16650000.073015695
1982	16710000.075399876
1983	18999999.65727329
1984	23840000.16003847
1985	31639999.88138675
1986	33959999.568760395
1987	42350000.0461936
1988	38339999.943971634
1989	54449999.98807906
1990	73239999.8903275
1991	67570000.6484985
1992	75080000.57935713
1993	80590000.09298328
1994	77160000.62227246
1995	77579999.77469449
1996	75580000.04291534
1997	58569999.18818473
1998	58610000.07390972
1999	53190000.47445297
2000	62020000.8749962
2001	69260000.0500679
2002	65589999.198913604
2003	78899999.55892567
2004	81170000.79154964
2005	97069999.93324284
2006	115899999.55892566
2007	167930000.1263618
2008	175489999.53269958
2009	187710000.87261203
2010	208639997.66111368
2011	207739999.83072278
2012	164253477.18596455
2013	195841267.94338226
2014	219818929.55303177
2015	217370465.21902072
2016	222862324.23782358
2017	231816277.62317657
2018	223339932.02447894
2019	891967001.6765592