Year	constant 2015 US$
1990	110960000
1991	1028900000
1992	332250000
1993	254200000
1994	300040000
1995	-343480000
1996	269370000
1997	248630000
1998	353790000
1999	414230000
2000	446420000
2001	750360000
2002	264530000
2003	338910000
2004	370170000