Year	current US$
1992	37265725.56891323
1993	79515030.97988221
1994	133652597.4025974
1995	130265625
1996	191341419.2898831
1997	214739093.5985222
1998	240705996.9328695
1999	313555620.61974335
2000	155378670.12987012
2001	265290935.40518144
2002	215506769.7153371
2003	230998355.58587396
2004	224726745.24025387
2005	223413426.8163994
2006	165700468.29268292
2007	167034491.05691057
2008	175470861.78861788
2009	172000487.80487806
2010	196867869.91869918
2011	260733665.0406504