Year	current US$
1974	560000.002384186
1975	1679999.94754791
1976	699999.988079071
1977	280000.001192093
1978	860000.014305115
1979	200000.010430813
1980	5099999.815225604
1981	840000.0333786011
1982	2770000.100135805
1983	2230000.0935792904
1984	2009999.968111516
1985	2159999.895840888
1986	2179999.932646754
1987	4119999.982416626
1988	2009999.9457597707
1989	860000.014305115
1990	1040000.021457672
1991	2359999.9509751755
1992	5769999.930635086
1993	6639999.924227599
1994	6940000.064671045
1995	8470000.013709066
1996	12310000.061988827
1997	6719999.894499775
1998	21289999.78303907
1999	7789999.939501287
2000	8810000.002384191
2001	7300000.05662441
2002	11020000.040531157
2003	15059999.883174902
2004	17560000.061988838