Year	current US$
1973	49999.99888241288
1974	250000
1975	269999.9902397396
1976	59999.9986588955
1981	90000.0035762787
1990	4299999.922513962
1991	157959993.8951429
1992	35099999.59915879
1993	16050000.075250858
1994	990000.0095367428
1995	2269999.9809265146
1996	8550000.015646217
1997	9939999.982714659
1998	1260000.037029381
1999	4640000.04529953
2000	2919999.996200203
2001	3449999.943375591
2002	3090000.0240653744
2003	3739999.9387562233
2004	5210000.023245815
2005	19999.9995529652
2006	1740000.0095367401
2007	500000
2008	319999.99284744303
2009	39999.9991059303
2010	9999.99977648258