Year	current US$
1976	4658148.14819336
1977	4810000.00003052
1978	5256296.29632568
1979	8901851.85189819
1980	7270066.92626679
1981	9004963.56850511
1982	4783093.22364742
1983	5696904.15157505
1984	12820000
1985	13800000
1986	25832231.9670226
1987	20220000
1988	21820000
1989	22770000
1990	26490000
1991	22684304.3098886
1992	33381253.0421989
1993	31510399.496871
1994	31254260.4922898
1995	29831248.52838
1996	30186054.8838707
1997	31188954.2765856
1998	38765934.5805944
1999	42584157.4178105
2000	55179038.167382
2001	61439397.1215861
2002	53198488.5016967
2003	51191684.0484642
2004	74981667.1411139
2005	69511994.4150968
2006	78691580.8543465
2007	86976851.9636046
2008	83690185.4348018
2009	87815455.4273306
2010	112702057.854892
2011	89626356.9120155
2012	111021926.087627
2013	135096711.23141
2014	157371371.547547
2015	166009602.198323
2016	192255789.768022
2017	182046079.244525
2018	169562298.93521
2019	193357067.381966
2020	205195146.794269
2021	311902934.999223
2022	320193327.161331
2023	280564003.843077