Year	current US$
1980	132000000
1981	206000000
1982	164000000
1983	57000000
1984	110000000
1985	128600006.103516
1986	58599998.4741211
1987	114000000
1988	152820007.32421902
1989	225270004.272461
1990	632640014.648438
1991	787159973.144531
1992	1101390014.64844
1993	929040039.0625
1994	853049987.792969
1995	808160034.179688
1996	882830017.089844
1997	784349975.585938
1998	839690002.441406
1999	826260009.765625
2000	703960021.972656
2001	1152390014.64844
2002	993299987.792969
2003	1120930053.71094
2004	1411690063.47656
2005	1868369995.11719
2006	2082080078.125
2007	3323060058.59375
2008	4786129882.8125
2009	4458689941.40625
2010	3989290039.0625
2011	2281250000
2012	984000000
2013	947789978.027344
2014	463369995.11718804
2015	358420013.42773396
2016	2536959960.9375
2017	641150024.414063
2018	643630004.882813
2019	733239990.234375
2020	685299987.792969
2021	1163250000
2022	596350001.2140721