Year	current US$
1990	254020004.272461
1991	563710021.972656
1992	1935099975.58594
1993	2419399902.34375
1994	1846890014.64844
1995	1916780029.29688
1996	1403150024.41406
1997	903010009.765625
1998	1183119995.11719
1999	1937319946.28906
2000	1553719970.70313
2001	1089810058.59375
2002	1284520019.53125
2003	1244479980.46875
2004	1319550048.82813