Year	current US$
1990	1407810031.8908741
1991	3501929977.416997
1992	2128390029.9072316
1993	1523440063.476562
1994	2403260025.0244145
1995	4089509883.880616
1996	1815529987.3352077
1997	2669239959.716799
1998	3101809959.41162
1999	3285290023.803708
2000	3050040023.8037143
2001	2218729972.839356
2002	2285969997.406006
2003	2461919998.168948
2004	3351770042.4194365
2021	1350000.02384186