Year	current US$
1981	213992129.1
1982	225362272.8
1983	240209711.1
1984	266638168.2
1985	295170535.9
1986	313976658.40000004
1987	466435079.3
1988	534269264.49999994
1989	429221322.3
1990	586630271.6
1991	500139869.70000005
1992	476903951.9
1993	542462854.2
1994	634050205.2
1995	767351471.7
1996	1348300000
1997	1640400000
1998	1433500000
1999	1199614366
2000	1571962658
2001	1568634269
2002	1403331852
2003	1597423346
2004	1850549128
2005	2079906262.9999998
2006	2416427420
2007	3113908124
2008	3587064652
2009	3778784011
2010	5143376595
2011	5947055816
2012	6042711494
2013	6481012624
2014	7620876455
2015	6633799563
2016	8906047936
2017	10097141947
2018	12902120494
2019	13210495946
2020	11020838497