Year	current US$
1990	78330000.51975253
1991	248650000.44740728
1992	297239990.3740734
1993	353809992.7566943
1994	227739995.3044956
1995	237190002.94059542
1996	184110000.2601747
1997	146739997.37761942
1998	140250000.2011655
1999	127630003.42436175
2000	142730001.81466374
2001	157329999.54745153
2002	134339997.21333387
2003	131630001.28418215
2004	126200001.67191026
2005	5079999.92370605
2006	6260000.228881841
2007	8819999.69482422
2008	9149999.61853027
2009	5360000.1335144
2010	5739999.771118159