Year	current US$
1980	50000000
1981	68000000
1982	68000000
1983	72000000
1984	73000000
1985	84000000
1986	93000000
1987	87000000
1988	127000000
1989	90000000
1990	81000000
1991	83000000
1992	125000000
1993	90000000
1994	92000000
1995	112000000
1996	128000000
1997	137000000
1998	134000000
1999	182000000
2000	175000000
2001	191000000
2002	197000000
2003	249000000
2004	411000000
2005	386000000
2006	420000000
2007	526000000
2008	543000000
2009	529000000
2010	854000000
2011	1043000000
2012	991000000
2013	909000000
2014	932000000
2015	1061000000
2016	1002000000
2017	1029000000
2018	1048000000
2019	981000000
2020	899000000
2021	1220000000
2022	1511000000
2023	1399000000