Year	current US$
1980	132000000
1981	206000000
1982	164000000
1983	57000000
1984	110000000
1985	128600006.103516
1986	58599998.4741211
1987	114000000
1988	152119995.117188
1989	222320007.32421902
1990	612830017.089844
1991	757369995.117188
1992	1066669921.875
1993	882130004.882813
1994	811150024.414063
1995	773260009.765625
1996	863989990.234375
1997	777039978.027344
1998	815150024.414063
1999	802649963.378906
2000	685330017.089844
2001	1143250000
2002	978950012.207031
2003	1104919921.875
2004	1388150024.41406
2005	1857000000
2006	2066010009.76563
2007	3291119873.04688
2008	4761009765.625
2009	4429120117.1875
2010	3963850097.65625
2011	2263000000
2012	981330017.089844
2013	939480041.503906
2014	461330017.089844
2015	361730010.986328
2016	2538409912.10938
2017	644190002.441406
2018	645380004.882813
2019	735130004.882813
2020	687609985.351563
2021	1166390014.64844
2022	586990001.6169995