Year	current US$
1964	4150000
1965	3690000
1966	5130000
1967	6690000
1968	5780000
1969	3010000
1970	7700000
1971	5778576.08341412
1972	6373429.78168767
1973	15181419.268872
1974	13107759.5932775
1975	24916031.4433412
1976	62103139.7112396
1977	83409808.9440977
1978	94050302.0255929
1979	165104989.336127
1980	196075653.485348
1981	167713241.997512
1982	119120666.005233
1983	111299731.946056
1984	106494072.304913
1985	113309498.230639
1986	162658701.48032
1987	165386949.253822
1988	118829750.761011
1989	70022315.3527652
1990	44514230.2782154
1991	110211742.87711
1992	78638180.7738075
1993	47404713.2006829
1994	51343323.8468
1995	99096536.8797331
1996	106744696.045402
1997	153343615.439199
1998	168751121.095543
1999	174181741.830184
2000	190641890.700649
2001	212109512.511183
2002	243728532.498222
2003	214698552.288102
2004	314640045.452476
2005	256882287.17377
2006	381762789.729147
2007	783926885.383969
2008	769313046.836517
2009	1009885490.217
2010	806395755.959935
2011	717579235.836789
2012	474575025.973946
2013	654377583.464105
2014	945126111.233454
2015	917998055.127134
2016	1013756070.46449
2017	1179065818.21496
2018	1354658758.16221
2019	1464573537.8348
2020	1719668098.77361
2021	1867263803.70417
2022	1725574898.68952
2023	1834050909.65197