Year	current US$
1990	336415546.13543826
1998	33922503.44557019
1999	103512723.41041747
2000	278213980.75764686
2001	70987801.05112971
2002	167444530.82299408
2003	430846221.0444175
2004	707914790.8719156
2005	678189317.8173553
2006	951875870.3207647
2007	1778797613.7001657
2008	951546624.6938531
2009	762905781.9015176
2010	1374157463.1230383
2011	1552941744.055772
2012	1224854614.3922641
2013	1209835644.1438246
2014	1469523821.1337717
2015	944955313.9424891
2016	849528846.1167427
2017	998058581.6120969