Year	current US$
1977	19999.9995529652
1978	9999.99977648258
1995	39999.9991059303
1996	150000.005960464
1997	209999.993443489
1998	-150000.005960464
1999	129999.995231628
2001	159999.99642372102
2002	119999.997317791
2003	50000.0007450581