Year	current US$
1976	133800000
1977	162900000
1978	205200000
1979	373200000
1980	237700000
1981	299300000
1982	202200000
1983	229000000
1984	231900000
1985	224500000
1986	222900000
1987	249300000
1988	235200000
1989	279500000
1990	290600000
1991	290500000
1992	289900000
1993	298600000
1994	314300000
1995	320700000
1996	336750000
1997	400640000
1998	422500000
1999	435500000
2000	450480000
2001	382443800
2002	417395000
2003	533540000
2004	589065071
2005	663229426.19
2006	806516485
2007	880157585.55
2008	992708000
2009	989850000
2010	1125015465
2011	1625236956
2012	1895316267.15939
2013	2301793799.92061
2014	2978639192.69597
2015	2791697156.981545
2016	2814617300.0429635
2017	3039701361.429
2018	3048959733.09663
2019	2836620877.6404104
2020	1712055702.0734453
2021	1969051794.6342032
2022	2732484209.4430623
2023	2521734387.2862554