Year	current US$
1990	73719999.67098235
1991	82390000.53145
1992	100069999.80285762
1993	21419999.761506923
1994	9220000.037923455
1995	9340000.085532667
1996	3219999.961555007
1997	790000.0438094079
1998	-2460000.0083446503
1999	1370000.114664441
2000	7860000.222921374
2001	3600000.0666827024
2002	-4389999.9763816595
2003	7239999.875426279
2004	5090000.096708542
2005	-1529999.97138977
2006	-3890000.10490417
2007	-3190000.05722046
2008	-3589999.91416931
2009	-1720000.02861023
2010	-1610000.01430511
2011	280000.001192093