Year	current US$
1970	28341517.4930735
1971	31627724.0588799
1972	49655387.1922246
1973	50691993.2135942
1974	62696377.1546469
1975	83808039.0113547
1976	78945738.3237364
1977	80743899.1306781
1978	63791278.0149053
1979	86367528.3191433
1980	107365535.893317
1981	83157007.8725941
1982	72567898.9692952
1983	60697707.900004
1984	59964519.2552542
1985	73687417.1641689
1986	97936042.603188
1987	120944202.69353
1988	216424067.607513
1989	230757499.861322
1990	237629800.461142
1991	252459756.57958
1992	266340773.425206
1993	258390703.756653
1994	280504760.379568
1995	376975028.307448
1996	371978711.507119
1997	360929019.703786
1998	368254037.378405
1999	397858041.802699
2000	373239640.742215
2001	339993274.048085
2002	394281427.076601
2003	541831960.985416
2004	672379182.934102
2005	679950728.04698
2006	786517499.16264
2007	1053933471.00561
2008	988193241.081118
2009	928850981.896996
2010	1108328010.2936
2011	1203321802.94235
2012	1086359811.84093
2013	1139906222.18414
2014	1204863813.53674
2015	988307940.746222
2016	967903541.223972
2017	1048327048.24594
2018	1114103528.38355
2019	1063327839.22135
2020	1144407026.09594
2021	1219745522.07542