Year	current US$
1966	64870000
1967	58640000
1968	3610000
1969	27890000
1970	20270000
1971	6050000
1972	61270000
1973	124720000
1974	70790000
1975	79950000
1976	76640000
1977	72560000
1978	148020000
1979	298900000
1980	213500000
1981	169477719.592008
1982	140447514.816859
1983	75358309.6963077
1984	45383492.4889516
1985	93351089.6309314
1986	106401607.280467
1987	166149988.792578
1988	178629390.938085
1989	94562790.2331327
1990	149202984.592622
1991	149684564.648329
1992	222181251.804694
1993	432043634.668391
1994	405275753.9748
1995	595516728.603537
1996	598812382.519067
1997	160096552.663961
1998	130759646.726695
1999	267960302.144825
2000	193133708.310207
2001	64712329.2732583
2002	83357907.8025755
2003	85187539.3967853
2004	223209533.911466
2005	97191584.4838922
2006	154593586.734786
2007	144518471.520768
2008	75505354.7471879
2009	821891029.988351
2010	731779021.646729
2011	659175718.235734
2012	574407706.177803
2013	474482653.44302
2014	363346140.379277
2015	418149725.852928
2016	406731446.398736
2017	292098759.611638
2018	86434589.0794849
2019	150626737.889991
2020	31937527.4134395
2021	836730965.381781
2022	588776316.53639
2023	73941518.840452