Year	2005 U.S. Dollars
1960-01-01	563.065069532720
1961-01-01	604.348089628414
1962-01-01	728.750491373516
1963-01-01	644.582655159954
1964-01-01	681.863552518971
1965-01-01	675.090632963653
1966-01-01	603.167075862218
1967-01-01	631.667886127647
1968-01-01	633.712684856043
1969-01-01	727.788476090680
1970-01-01	676.822915151861
1971-01-01	719.072849726548
1972-01-01	868.838101824754
1973-01-01	767.865006253381
1974-01-01	921.164583599697
1975-01-01	1064.291300905580
1976-01-01	1141.914349453670
1977-01-01	1090.357245260290
1978-01-01	1146.499237122450
1979-01-01	1148.517223845310
1980-01-01	1242.454334998000
1981-01-01	1313.490453578560
1982-01-01	1294.447514292810
1983-01-01	1267.167349500230
1984-01-01	1174.007172949930
1985-01-01	1204.483865663600
1986-01-01	1108.192282450950
1987-01-01	1094.179708707810
1988-01-01	1201.782796102440
1989-01-01	1061.677698693150
1990-01-01	1109.498117613410
1991-01-01	1162.974502345930
1992-01-01	1282.741850003490
1993-01-01	1312.016373936050
1994-01-01	1373.784638418870
1995-01-01	1413.149641424600
1996-01-01	1434.856689888080
1997-01-01	1420.604561494620
1998-01-01	1470.186746702960
1999-01-01	1382.109115159710
2000-01-01	1386.882420500790
2001-01-01	1429.267166871580
2002-01-01	1486.602881124990
2003-01-01	1469.005841406420
2004-01-01	1537.703764942230
2005-01-01	1591.530192412270
2006-01-01	1617.983244124480
2007-01-01	1648.810220747140