Year	current US$
1992	418400000
1993	447110000
1994	316410000
1995	391513000
1996	795200000
1997	709353000
1998	841100000
1999	610500000
2000	556462792
2001	464759965
2002	587146304
2003	711935599
2004	942730496
2005	1111570039
2006	1710517514
2007	2253209871
2008	4071193412
2009	2975808719
2010	3224693937
2011	4263408994.0000005
2012	5376738027
2013	5986901178
2014	5685135564
2015	4070683110
2016	3847004577
2017	4490077447
2018	4824039852
2019	4903806469
2020	3684107543