Year	current US$
1960	239000000
1961	222000000
1962	329000000
1963	382000000
1964	379000000
1965	331359985.35156304
1966	198039993.28613302
1967	296380004.88281304
1968	248490005.493164
1969	173000000
1970	211000000
1971	168000000
1972	149000000
1973	120000000
1974	73000000
1975	154000000
1976	203000000
1977	88000000
1978	80000000
1979	29000000
1980	42000000
1981	92000000
1982	112000000
1983	59000000
1984	87000000
1985	144000000
1986	194000000
1987	90000000
1988	339000000
1989	263000000
1990	167000000
1991	114000000
1992	39000000
1993	54000000
1994	-53000000
1995	-82000000
1996	-101000000
1997	-76000000
1998	-40740001.6784668
1999	74970001.2207031
2000	88459999.0844727
2001	775640014.648438
2002	208979995.727539
2003	102279998.77929701
2004	76910003.6621094
2005	323070007.324219
2006	477720001.220703
2007	433570007.324219
2008	350630004.88281304
2009	613039978.027344
2010	1200449951.17188
2011	1262130004.88281
2012	621349975.585938
2013	609849975.585938
2014	695960021.972656
2015	746099975.585938
2016	605309997.558594
2017	492239990.234375
2018	464350006.10351604
2019	318149993.89648396
2020	301059997.558594
2021	236580001.831055
2022	184350006.10351598