Year	current US$
1990	3309999.94277954
1991	7699999.80926514
1992	8189999.580383301
1993	7320000.17166138
1994	8770000.45776367
1995	13890000.3433228
1996	9109999.65667725
1997	6889999.8664856
1998	3819999.9332428
1999	2430000.0667572
2000	1950000.04768372
2001	3960000.03814697
2002	4380000.11444092
2003	4800000.19073486
2004	5699999.80926514