Year	current US$
1970	19999.9995529652
1971	300000.011920929
1980	9999.99977648258
1991	889999.985694885
1992	579999.983310699
1996	-500000
2004	109999.999403954
2006	9999.99977648258
2007	129999.995231628
2008	90000.0035762787
2009	159999.99642372102
2010	150000.005960464