Year	current US$
1992	495952697.8378024
1993	436261760.88120556
1994	530665584.4155844
1995	545296875
1996	636855601.1767112
1997	652036833.8449144
1998	601184648.5907907
1999	479093441.34588176
2000	506797028.5714286
2001	545757920.0123931
2002	611333486.2662032
2003	765628077.061565
2004	1077404184.950136
2005	1023744024.6456302
2006	1112583362.601626
2007	1116425008.1300814
2008	1140436943.0894308
2009	1662473378.8617885
2010	1807450302.4390244
2011	2027246900.813008