Year	current US$
1975	275831329.3
1976	314651031.5
1977	369897338.9
1978	432644287.1
1979	531903198.20000005
1980	691830505.4
1981	688701965.3
1982	875270507.8
1983	864563232.4
1984	962636474.6
1985	1044045288
1986	1083984131
1987	1101688110
1988	1179087891
1989	1283275757
1990	769617444.662079
1991	425653800
1992	828721745.021985
1993	1229133715.83356
1994	1330547313.22665
1995	1353670917.21103
1996	1376046147.15484
1997	1374655023.81112
1998	1611126868.7267
1999	1731191226.00313
2000	1734302376.59735
2001	1784912694.48777
2002	1925543131.95502
2003	2143876846.36308
2004	2404479131.31999
2005	2647602739.72603
2006	3183238047.84489
2007	9763770985.32723
2008	10322571365.5466
2009	11749212891.6192
2010	11864003972.95
2011	13012206030.134
2012	15459199374.3215
2013	17711480680.7188
2014	18128476350.2661
2015	15202536401.3565
2016	15287570250.0848
2017	13760108803.0924
2018	14346861711.1383
2019	18855161641.2345
2020	17357178322.8966
2021	18468103779.7774
2022	17744092398.6186