Year	current US$
1970	1019442.4218378
1971	1236687.56753456
1972	1458360.13409207
1973	1514817.90971374
1974	2021206.34783303
1975	2346148.69087691
1976	1959898.3160531
1977	3296372.21030321
1978	3640838.21701177
1979	4194195.49567214
1980	5780417.11372715
1981	7174486.55711512
1982	7680207.0610507
1983	7601137.01442359
1984	8459211.2768183
1985	10039608.3672686
1986	12438535.6608832
1987	14069622.230724
1988	18116028.223799
1989	20119600.7848504
1990	23385286.7629451
1991	23193287.9829095
1992	25186978.4100448
1993	27192863.0863245
1994	29512771.6456327
1995	35368635.608756
1996	37768904.8853962
1997	41461721.2398697
1998	42627563.5533056
1999	45626520.4010823
2000	48433811.0852057
2001	53451875.5230885
2002	55637121.8231155
2003	53265212.9637127
2004	55187237.2337181
2005	55671512.7747862
2006	68638860.0351124
2007	74174641.5305848
2008	85186930.4269744
2009	83991985.630597
2010	90462320.3940139
2011	97260544.5075343
2012	93357488.0724847
2013	99710118.5249574
2014	111843848.370767
2015	116979399.504194
2016	122977511.365069
2017	132382685.889505
2018	132953350.661034
2019	139031277.182331
2020	115823798.813577
2021	110964896.66301