Year	current US$
1970	60029999.53553079
1971	69679999.60854645
1972	69320000.16979872
1973	76039999.81842937
1974	76030000.13902786
1975	110820000.65781179
1976	104970000.7904321
1977	96469999.07493593
1978	120489999.45074324
1979	142530000.4482269
1980	192379998.6541272
1981	281850001.9013882
1982	237990001.1718273
1983	195350000.7688999
1984	193229999.3485212
1985	223520000.88989732
1986	257340000.18239015
1987	260810000.06198874
1988	308879999.63760406
1989	333050000.4887582
1990	305349999.84502804
1991	351960002.2993983
1992	291760002.590716
1993	237789998.65055078
1994	186889999.57218766
1995	173200001.61975622
1996	227099997.08831304
1997	293189999.63998795
1998	247390000.86858872
1999	209320000.50693756
2000	144809999.3374199
2001	126490000.99301338
2002	131769999.26380819
2003	154239999.7599423
2004	186349999.83757734
2005	196330001.3244152
2006	228719999.96900553
2007	222389998.94261357
2008	285480000.8535383
2009	287039998.5760451
2010	270020000.8749962
2011	214529999.8000265
2012	217275857.00340566
2013	209821573.0302036
2014	234271715.1641845
2015	211146135.67758358
2016	208331492.83379322
2017	194692262.0981932
2018	184699725.69495443
2019	238513396.859169
2020	279181630.2835942
2021	263615272.58157727
2022	271269491.9109344