Year	current US$
1992	103855300.76582374
1993	145854050.3327469
1994	160422077.92207792
1995	253828125
1996	268629949.50210017
1997	205419519.71555158
1998	390150408.92809355
1999	428048594.8527304
2000	387068374.02597404
2001	320884044.6026916
2002	289224673.3352466
2003	405545158.1223689
2004	406035249.3200363
2005	387019529.06174594
2006	313931707.31707317
2007	337858081.300813
2008	363829398.37398374
2009	373413671.54471546
2010	505565515.44715446
2011	549641365.8536586